Narrated Abdur-Rahman bin Abi Laila: A man from the Companions of the Prophet صلی اللہ علیہ وسلم told me that the Messenger of Allah صلی اللہ علیہ وسلم prohibited cupping and perpetual fasting, but he had not made them unlawful showing mercy on his Companions. Thereupon he was asked: Messenger of Allah, you observe perpetual fast till dawn. He replied: I observe perpetual fast till dawn (for) my Lord gives me food and drink.