Musannaf Ibn Abi Shayba 16:466

Abu Bakr narrated to us, he said: Muhammad ibn Bishr and Abu Dawud al-Ja'di narrated to us, from Mis'ar, from Wabarah, from al-Sha'bi, from Suwayd ibn Ghafalah, from Umar, who said: "Nothing of silk is permissible except what is in a hem or a buttoning."