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