It was narrated from Saeed bin Jubair, from a man who he thought was good, that ‘Aishah, may Allah be pleased with her, told him that the Messenger of Allah صلی اللہ علیہ وآلہ وسلم
said: “There is no man who habitually prays at night, then sleep overwhelms him, but Allah will record for him the reward of his prayer, and his sleep is a charity given to him.” (Sahih)