Musannaf Ibn Abi Shayba 3:4940

Waki' narrated to us, he said: Sufyan narrated to us, from 'Abd al-Hamid ibn Abi Rafi', from Sa'id ibn Ka'b, from Jabir ibn Zayd, that he disliked for a woman to pray while she is wearing a niqab (face veil), or to perform tawaf while she is wearing a niqab.