Yahya related to me from Malik that he had heard that Said ibnal-Musayyab used to say, "Sleep is disapproved of before isha andconversation after it." (AR)
App reference (AR): Book 7, Hadith 6 (AR)
USC-MSA web (English) reference: Book 7, Hadith 6 (AR)
Arabic reference (AR): Book 7, Hadith 260 (AR)