Musnad Abu Ya'la al-Mawsili 3:155

Ishaq ibn Abi Isra'il narrated to us, Abd al-Razzaq narrated to us, Ma'mar informed us, from al-Zuhri, from Ibrahim ibn Abdullah ibn Hunayn, from his father, from Ali, who said: The Messenger of Allah (may Allah bless him and grant him peace) forbade me from wearing a gold ring, from wearing al-Qassi (a type of silk garment), from reciting [the Quran] while bowing and prostrating, and from wearing saffron-dyed clothing.