It is narrated from Hazrat Aisha (may Allah be pleased with her) that sometimes the Prophet (peace and blessings be upon him) would be in a state of major ritual impurity (junub) in the morning, so he would perform ghusl (ritual bath) and proceed towards the mosque, and at that time drops of water would be dripping from the blessed head of the Prophet (peace and blessings be upon him), and he would make the intention to fast for that day.