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." (JA)
App reference (JA): Book 7, Hadith 6 (JA)
USC-MSA web (English) reference: Book 7, Hadith 6 (JA)
Arabic reference (JA): Book 7, Hadith 260 (JA)