Musannaf Ibn Abi Shayba 9:1774

Ibn ‘Ulayyah narrated to us, from ‘Abd al-‘Aziz ibn Suhayb, from Ayyub, from al-Hasan, that the Prophet (may Allah bless him and grant him peace) saw Siwar ibn ‘Amr wearing saffron (khaluq). He said: "Remove it, remove it, [it is] saffron, [it is] saffron."