بسم الله الرحمن الرحيم

Shaikh Salih al Fawzaan حفظه الله comments regarding His Statment:

وَإِذۡ أَخَذَ ٱللَّهُ مِيثَٰقَ ٱلنَّبِيِّـۧنَ لَمَآ ءَاتَيۡتُكُم مِّن كِتَٰبٖ وَحِكۡمَةٖ ثُمَّ جَآءَكُمۡ رَسُولٞ مُّصَدِّقٞ لِّمَا مَعَكُمۡ لَتُؤۡمِنُنَّ بِهِۦ وَلَتَنصُرُنَّهُۥۚ قَالَ ءَأَقۡرَرۡتُمۡ وَأَخَذۡتُمۡ عَلَىٰ ذَٰلِكُمۡ إِصۡرِيۖ قَالُوٓاْ أَقۡرَرۡنَاۚ قَالَ فَٱشۡهَدُواْ وَأَنَا۠ مَعَكُم مِّنَ ٱلشَّٰهِدِينَ

And (remember) when Allah took the Covenant of the Prophets, saying: “Take whatever I gave you from the Book and Hikmah (understanding of the Laws of Allah, etc.), and afterwards there will come to you a Messenger (Muhammad SAW) confirming what is with you; you must, then, believe in him and help him.” Allah said: “Do you agree (to it) and will you take up My Covenant (which I conclude with you)?” They said: “We agree.” He said: “Then bear witness; and I am with you among the witnesses (for this).”

Surah Aal-E-Imran, Ayah 81

What we can take from this verse is that the path of all of the Messengers is one, and that path is the call of singling out Allah with all worship for him alone and the following of the Messengers عليم الصلاة و السلام, because they are like brothers just like the Messenger صلى الله عليه وسلم said:

The Prophets are [like] paternal brothers; their mothers are different but their religion is one.” (Bukhāri 3443; Muslim 43)

(Benefit from Shaykh Fawzan’s Explanation of Fath Al-Majeed: the religion of all Prophets is one and it is Tawheed, just as paternal brothers have the same father; and their laws and legislation are different just as they have different mothers.)

So their religion (ie Tawheed) is one and as for the laws (legislations) then Allah has made for every prophet his own law and clear way, like He سبحانه وتعالى said:

” لِكُلّٖ جَعَلۡنَا مِنكُمۡ شِرۡعَةٗ وَمِنۡهَاجٗاۚ “

” To each among you, We have prescribed a law and a clear way.”

Surah Al-Ma’idah, Ayah 48

So Allah legislated for every ummah what is suitable and relevant for its time, then he would abrogate after that with a legislation that is suitable and relevant for the ummah that comes after it and this would continue up until Allah sent Muhammad صلى الله عليه وسلم,  then Allah abrogated all of the previous legislations with a legislation for Muhammad صلى الله عليه وسلم and that legislation was established and it will remain and no further abrogations will take place after that. So the legislation of Muhammad صلى الله عليه وسلم is the most correct, ever lasting and remaining one that is relevant to every time and place now.

Source: Min Ahkhaam Al-Qur’aan by Shaikh Salih al Fawzaan حفظه الله  vol.1 pg 41