Musnad Ahmad 32:1645

Harun narrated to us, Ibn Wahb said: And Usamah bin Zayd narrated to me, that Hafs bin Ubayd Allah bin Anas narrated to him, he said: I heard Anas bin Malik saying: The Messenger of Allah, peace and blessings of Allah be upon him, said: "Shall I not inform you of the prayer of the hypocrite? He leaves the Asr until it is between the two horns of the devil - or upon the two horns of the devil - then he stands and pecks it like the pecking of a rooster, not remembering Allah therein except a little."