Yahya related to me from Malik from Ibn Shihab from Salim ibn
Abdullah that the Messenger of Allah, may Allah bless him and grant
him peace, said, "Bilal calls the adhan in the night, so eat and drink
until Ibn Umm Maktum calls the adhan." Ibn Umm Maktum was a blind man
who did not call the adhan until someone said to him, "The morning has
come. The morning has come."
Muwatta Malik Book 3, Hadith 16