Maliks Muwatta Book 7, Hadith Number 6.
Section : Concerning Prayer in the Night.
Yahya related to me from Malik that he had heard that Said ibn al-Musayyab used to say, “Sleep is disapproved of before isha and conversation after it.”
Yahya related to me from Malik that he had heard that Said ibn al-Musayyab used to say, “Sleep is disapproved of before isha and conversation after it.”