Hadith 10:243
Abu Bakr narrated to us, he said: Ibn Mahdi narrated to us, he said: I said to Malik, "It has been narrated to me that Sulayman ibn Yasar and Sa'id ibn al-Musayyib said: 'His divorce is valid.'" He said: "Yes."
حدثنا أبو بكر قال نا بن مهدي قال قلت لمالك حدثت أن سليمان بن يسار وسعيد بن المسيب قالا طلاقه جائز قال نعم