Hadith on Ramadhan

The sunnah would be fulfilled by eating a small or large quantity of food, or even just by drinking a sip of water. Abu Sa'id al-Khudri reported that the Messenger of Allah said: "The pre-dawn meal is blessed, so do not neglect it even if you only take a sip of water. Verily, Allah and the angels pray for those who have pre-dawn meals." This is related by Ahmad.