In answer to the video "Muhammad did it. Therefore it is not sinful."
The sunna of Jesus, regardless of the baseless Christian conjectures, simply is; being Jewish. "The way" of Jesus Jn14:6 is outlined in Lk10:25-28 where he commands strict observance of Jewish laws. In that passage from Luke he is asked about the conditions of salvation and the questionner quotes from Lev19 which details certains laws like the observance of the sabbath and admonishes to
"Keep all my decrees and all my laws and follow them. I am the LORD".The 2nd passage quoted by the questionner is Deut6 which speaks of loving the One God and obeying His commandements
"keep the commands of the LORD your God and the stipulations and decrees he has given you. Do what is right and good in the LORD's sight..obey all this law before the LORD our God, as he has commanded us, that will be our righteousness".
As one can clearly see, one is justified before God, not by faith alone but by deeds too. Consequently the Nazarenes, Jesus' early group of small band of followers, observed all Jewish customs outlined in the Torah but differed from Jews in that they recognized Jesus as the Messiah. These 120 small band of believers in Jesus, an inconsequential number considering the spectacular wonders that accompanied his life, death and resurrection, were the followers of "the way" Acts19:9,23,22:4,24:14,22 and known as already said, as the Nazarenes Acts24:11.
The Quran calls them nasara from nusra/help in reference to those few core elements that valliantly stood by him, when he started sensing disbelief among his followers 3:52,61:14.
This inner circle are not the cowards presented in the NT as fleeing Jesus when adversity came or unable to understand most if any, of his teachings which is why they abandoned his instructions to abide by the law soon after his death. In the Quran they pray Allah to make them witnesses of the truth, that their life becomes an embodiment, a testimony to Jesus' teachings. "Christian" is a later appellation Acts11:26. In fact the word Christian itself is in reference to the belief that those who hold that qualification are anointed with God's oil, according to the earliest Christians such as Theophilus.
Nasara is phonetically close to the historical Nazarene/Nazoraios (Greek) or Nasraya (Syriac) Acts24. In the region of the Levant from where the Christians of the Hijaz originated, Christians called themselves Kristyane. It is expected that the Quran would address them by that same name just as it addresses Jews and other groups by their own names. Instead it chose to bring back to the spotlight an appellation forgotten by Christians themselves, found in their books, in reference to the first followers of Jesus, so as to illustrate how far they have gone astray. The last revelation this way vindicates Jesus' true followers, the Nazarenes, by bringing them back to the forefront of history after they had been relegated to darkness by the Christian pauline movement.
Another similarly remarkable feature of the Quran, is in its emphatic description of Jesus' mission as exclusively meant for the Israelites. To the Jews of 7th century Arabia, as is the case today, the reason for Jesus' mission and to whom it was directed to, was of no importance. No Jew would have walked around teaching the notion that Jesus was sent to the Jewish tribes. Christians on the other hand, teach that Jesus' mission was meant for all of humanity. The NT itself makes the claim, contradicting itself. It is thus expected for a 7th century Arab who is neither a Jew nor Christian, and who awkwardly decides to reveal Jesus' target audience, to similarly state that Jesus was sent to all people. Or at the very least that he was sent to Christians just as Moses was sent to the Jews.
The Nazarenes grew among the Israelites but persecutions forced them to go into hiding, with Paul playing a central role in their persecution prior to his conversion. After joining their ranks, he influenced the group leaders, namely Peter and James, to reach out to the Gentiles. With more non-Jews entering the fold, Jewish laws binding on the community were abandoned Acts15:1-29 and so was Jesus' "way". The Nazarenes who were centred in Jerusalem gradually became isolated. It is interesting noting that upon his arrest by the Jews and Romans, Paul was assumed to be Acts24"a ringleader of the Nazarene sect". Paul doesnt confirm the accusation, as it obviously did not conform to reality, and instead claims he follows the original path of Jesus. Paul's missionary activities progressively gained him a following among the gentile population which was more inclined looking up to Paul for leadership, instead of Jesus' brother James, a strict observer of Jewish Law, considered to be Jesus' successor in non-canonical Gospels.
With the establishment of Christianity as a state religion in Rome by Constantine in the 4th century, they definitely fled Jerusalem, in the surrounding deserts and managed to survive outside Palestine as they are mentioned by Jerome upto 380AD to have lived in the Syrian desert. Among them the Ebionites (who claimed to descend from the original Jewish disciples led by James) and Elchasites who rejected Paul as a charlatan and his teachings as falsehood, as well as the Zadokites, Essenes, Rechabites, Sabeans, Mandaeans etc.
They had their own writing which they considered scripture, composed of an oral tradition attributed to Jesus, and some HB books. Their writings are known, among others as Gospel of the Nazareans, Gospel of the Hebrews and Gospel of the Ebionites.
They would later write that Paul was a false apostle who taught heresy based on the fact he was a failed convert who was disappointed with Judaism and therefore motivated to teach against its laws, all the laws that constituted Jesus' "way". Unfortunately the group that opposed them and their practices gained more converts, obviously as it appealed much more to non-Jews, more particularly the hellenized Romans and Greeks.
The Nazarenes and similar groups were inevitably marginalised while the more and more dominant groups decided what the Church’s organizational structure would be, as well as its official creeds, or which books would be accepted as Scripture. The group that became "orthodox", further sealed its victory, by the pens of early writers like Iraeneus, Justin Martyr and Tertullian, claiming that their "way" had always been the majority opinion of Christianity, going back to Jesus and his apostles.
Many of the laws of Moses are inapplicable today due to the absence of a Temple. What is damaging however from a Christological perspective is that the prophets of the HB did envision a time where such a thing would happen. None said a thing about believing in Jesus or any other messianic claimant, as an alternative way to be accepted by God. Instead, they were commanded by God Himself to turn to Him in prayer and repentance Hos3,14,1Kings8:46-50. This would have been the perfect occasion in scripture to integrate Jesus in the grand scheme of divine salvation. But it doesnt.
The Hebrew Bible says full Torah observance will be restored in the messianic era when the promised Jewish King/Messiah will build the Third Temple in Jerusalem Mal3:4,Deut30,Ezek11,36,37. This alone refutes the Christian interpretation, alien to Jesus' teachings, that Jesus actually abrogated 603 commandements and told his followers to only abide by 10 of them. More damning to Christian theology and its concept of once and for all blood sacrifice with Jesus is the fact that animal offerings will be brought to the Temple at that time, as a requirement of the reinstated commandements Isa56:6-8,Zech14:16,Jere33:15-18,Ezek43:18-46:24.
Jesus himself doesnt say that the institution of animal sacrifices is abolished, or that it will be, rather he emphasized righteousness and high morality as a prerequisite. That approach is basically what he tried infusing in every aspect of the Mosaic Law. In fact we even read that after Jesus' departure, his closest disciples in Jerusalem still practiced animal sacrifices. They requested of Paul to do the same so as to prove his allegiance to Moses' and Jesus' teachings Acts21,Numb6:14.
This negates the notion that Jesus' supposed death rendered the sacrificial system obsolete.
In fact there is not even such a thing as "the 10 commandements". The entire number of commandements in the Tanakh are 613 and each one of the 613 is considered equally important. In the Hebrew, there is no equivalent for what Christians refer to as the "Ten Commandments", in reference to Ex20. In the Torah, they are called Aseret ha-D'varim Ex34:28,Deut4:13,10:4 meaning word, speak or thing; thus, the phrase is accurately translated as the Ten Sayings, the Ten Statements, the Ten Declarations, the Ten Words or even the Ten Things, but not as the Ten Commandments except in Christian Bibles of course, because "Ten Commandements" would be in Hebrew Aseret ha-Mitzvot.
These ten sayings are not understood as individual mitzvot/commands; rather, they are categories or classifications of mitzvot/commands. Each of the 613 mitzvot can be subsumed under one of these ten categories, some in more obvious ways than others. In Talmudic times, the rabbis purposefully excluded these ten sayings from the liturgy because they thought excessive emphasis on them might lead people to mistakenly believe that these were the only mitzvot or the most important mitzvot, and neglect the full 613 (Talmud Berakhot 12a).
In NT times, the Church of God at Jerusalem didnt force new converts to immediately apply all of them so they were required initially to follow 4 Acts15:19-20 which summed up 65+ commandments but had to study and learn all of them as part of their spiritual development, it could be achieved by everyone according to Deut30:10-14. It was usually done each Sabbath Acts15:21.
Jesus never transgressed and always abided by all the mitzvots, including the near totality of the early Christian church that was composed of Jewish converts who upheld the Torah and believed that Jesus was the messiah.