Yahya related to me from Malik from Muhammad ibn Yahya ibn Habbanfrom al Araj from Abu Hurayra that the Messenger of Allah, may Allahbless him and grant him peace, forbade prayer after asr until the sunhad set, and prayer after subh until the sun had risen.
USC-MSA web (English) reference: Book 15, Hadith 48
Arabic reference: Book 15, Hadith 520