Jami` at-Tirmidhi 2663
جامع الترمذي#2663SahihNarrated 'Ubaidullah bin Abu Rafi:from Abu Rafi' and others, from the Prophet (ﷺ) who said: "Let me not find one of you reclining on his couch when a command I ordered, or a prohibition from me comes to him, and he says: 'I do not know. What we find in the Book of Allah, we follow it
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 41:19