Maliks Muwatta Book 29, Hadith Number 82.

Yahya related to me from Malik that he had heard that Said ibn al-Musayyab and Sulayman ibn Yasar were asked about a man who divorced when he was drunk. They said, “When a drunk man divorces, his divorce is allowed. If he kills, he is killed for it.”

Malik said, “That is what is done among us.”

Yahya related to me from Malik that he had heard that Said ibn al-Musayyab said, “If a man does not find the means to spend on his wife, they are to be separated.”

Malik said, “That is what I saw the people of knowledge in our city doing.”