Hadith.906 - Bilal used to call to prayer after the morning (Fajr), and The Prophet (sw) said:
"Indeed, Ibn Umm Maktum calls to prayer during the night, so if you hear his adhan, eat and drink until you hear the adhan of Bilal."
Al-Kāfi #369“Abu ‘ Abd Allah (a.s.), has said that ibn ‘Umm Maktum once said Adhan for the morning Salat (prayer) and a man passed by the Messenger of...