It is narrated from Sayyida Aisha (may Allah be pleased with her) that the Noble Prophet (peace and blessings be upon him) said: Indeed, Bilal (may Allah be pleased with him) calls the adhan at night, so you may continue eating and drinking until Ibn Umm Maktum (may Allah be pleased with him) calls the adhan. Sayyida (Aisha) says: To my knowledge, (the interval between these two adhans was such that) when one would descend after calling the adhan, the other would ascend to call the adhan.