[46-47] Then after those Prophets, We sent Jesus, son of Mary; he confirmed whatever had still remained intact of the Torah in his time. And We gave him the Gospel wherein was Guidance and Light; that too, confirmed what was intact of the Torah76 at the time; moreover, it was guidance and admonition for the God-fearing people. We had enjoined that those who were given the Gospel. should judge by the Law which Allah has sent down in it: those, who do not judge by the Law which Allah has sent down, are the transgressors.77
76This means that Jesus did not bring any new religion but followed the same way that was followed by all the Prophets before him and invited the people to the same. He believed in what was intact in his time from among the original teachings of the Torah, and the Gospel also testified to the same.(Matthew, 5: 17-18). The Qur'an reiterates the fact that each and every prophet, who was sent by Allah to any part of the world, confirmed the Message of all the Prophets who had gone before him and exerted his utmost to complete the work which they had left as a holy heritage, for he did not come to refute them or efface their religion and establish his own religion instead. Likewise Allah did not send down any of His Books to refute any of His own previous Books, but to support and confirm them.
77In this passage (vv. 44-47) Allah has shown that those who do not judge by the Law sent down by Him are: (1) disbelievers, (2) unjust people and (3) transgressors. As a corollary to this, the person who discards the Law of Allah and judges by the law formulated by himself or by others is guilty of three crimes. First, he practices disbelief by his rejection of the Law of Allah. Secondly, he becomes guilty of injustice because he violates the Law of Allah which is perfectly just and equitable. Thirdly, he became a transgressor (Fasiq against Allah, because, in spite of being Allah's servant, he transgressed against his Master's Law and adopted his own law or that of another. Thus practically he broke away from the allegiance and subjection of his Master and denied His Authority: this is risq.
This disbelief, injustice and transgression are Inherently part and parcel of the violation of Divine Law. It is, therefore, not possible to avoid these three crimes where there is such a violation. They, however, vary in their relative guilt in accordance with the nature and extent of the rejection of the Law. If one gives judgment against the Divine Law on the basis that he considers that Law to be wrong and his own or someone else's law to be right, such a person shall be a disbeliever, an unjust person and transgressor, in the fullest sense of the words. However, if one holds the belief that the Law of Allah is right, but in practice gives judgment against it, such a one shall not be outside the Muslim community, but shall be considered to be mixing his belief with disbelief, injustice and transgression. Likewise, if one rejects the Law of Allah in all affairs of life, he shall be considered to be a disbeliever, unjust person and transgressor in every aspect of life and if one accepts the Law in certain matters and rejects it in others, One shall have a mixture of belief and Islam, disbelief, injustice and transgression all mixed together in one's life, exactly in the proportion one obeys the Law or violates it.
Some commentators are of the opinion that the above-mentioned verses apply only to the People of the Book, but the words of the Qur'an do not support this at all. Hadrat Hudhaifah refuted this version very aptly. Someone said to him that these verses applied to the children of Israel only, that is, if one of the Jews judged against the Law sent down by Allah, he would be a disbeliever, transgressor and rebel but not a Muslim. Hadrat Hudhaifah replied. "What good brethren the children of Israel are to you: all that is bitter is for them and all that is sweet is for you! By God, you will follow their way step by step (and shall be dealt with like them)."