Hadith #4605 (Sunan Abi Dawud)
Book: Model Behavior of the Prophet (Kitab Al-Sunnah)
Narrator(s): Abdur Rahman bin 'Amr bin 'Absa عبد الرحمن بن عمرو بن عبسة, Ahmad bin Hanbal أحمد بن حنبل, al-Walid bin Muslim al-Quraishi الوليد بن مسلم القرشي, Khalid bin Ma'dan خالد بن معدان, Thaur bin Yazid al-Rahbi ثور بن يزيد
Grade: Sahih

The Prophet (ﷺ) said: Let me not find one of you reclining on his couch when he hears something regarding me which I have commanded or forbidden and saying: We do not know. What we found in Allah’s Book we have followed.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-4605/