Sunan At-Tirmidhi

Narrated 'Ali bin Abi Talib: ""The Messenger of Allah (ﷺ) prohibited me from rings of gold, and from wearing Al-Qassi, and from reciting in the bowing and prostration positions, and from wearing what was dyed with 'Usfur."" [Abu 'Eisa said:] This Hadith is Hasan Sahih