Musannaf Ibn Abi Shayba 10:1110

Abu Bakr narrated to us, he said: Yahya bin Muhammad al-Qurashi narrated to us, from Ibn ‘Ajlan, from ‘Abd al-Rahman bin Nadla, who said: I divorced a cousin of mine three times, irrevocably. So I came to Sa’id bin al-Musayyib to ask him, and he said: "She shall observe her waiting period in her husband’s house where she was divorced." And I asked al-Qasim, Salim, Abu Bakr bin ‘Abd al-Rahman bin al-Harith, Kharija bin Zayd, and Sulayman bin Yasar, and all of them said the same as the statement of Sa’id.