Bheesa's father says that once I sought permission from the Prophet (peace be upon him) and began to suck and cling to his blessed body from beneath his shirt. Then I asked, "O Messenger of Allah! What is that thing which it is not permissible to withhold?" The Prophet (peace be upon him) replied: "Water." I asked the same question again, and the Prophet (peace be upon him) gave the same answer. Upon asking a third time, he said: "It is better for you to do acts of goodness."