(We have revealed unto thee clear tokens …) [2:99].
Said Ibn ‘Abbas: “This is a reply to Ibn Suwriya when he said to Allah’s Messenger, Allah bless him and give him peace: ‘O Muhammad! You did not bring anything that we know, and no clear token has been revealed to you by means of which we follow you’. And, hence, Allah revealed this verse”.
Asbab Al-Nuzul by Al-Wahidi , trans. Mokrane Guezzou