I’ve read that once Umar (radiyallahu ‘anhu) was reciting the Tawrah, and Rasulullah (sallallahu ‘alayhi wasallam) was upset and said if Musa (‘alayhis salam) was alive today he’d have to abandon that law/revelation and follow him (sallallahu ‘alayhi wasallam). Please reference the source, text, and grading.
Sayyiduna Jabir (radiyallahu’anhu) reports that once Sayyiduna ‘Umar (radiyallahu’anhu) brought a book to Rasulullah (sallallahu’alayhi wasallam) which he acquired from the people of the book (the Jews) and said: ‘O Rasulullah! I have a good book from the people of the book.’
Rasulullah (sallallahu’alayhi wasallam) became angry and said:
‘Are you being reckless O son of Khattab?! By the oath of Allah! I have brought it (religion) to you in a state that is bright and clear. It shouldn’t be that you end up denying the truth they tell or you believe the falsehood that they tell. By oath of Allah! If [Nabi] Musa (‘alayhis salam) was alive today, he would have no other option but to follow me.’
This Hadith also appears in various Hadith collections, among them are the following:
Musannaf Abdur Razzaq, Hadith: 10163 and 10164, Musannaf ibn Abi Shaybah, Hadith: 26949, Musnad Ahmad vol. 3 pg. 387, Sunan Darimi, Hadith: 435, Musnad Bazzar; Kashful Astar, Hadith: 124, Shu’abul Iman, Hadith: 174 and Gharibul Hadith of Abu ‘Ubayd.
These versions gain collective strength and establish its reliability.
(Footnotes of Shaykh Muhammad Awwamah on Musannaf ibn Abi Shaybah, Hadith: 26949)
And Allah Ta’ala Knows best,
Answered by: Moulana Muhammad Abasoomar
Checked by: Moulana Haroon Abasoomar