Buhaysah narrated from her father: He went to the Prophet Muhammad (peace be upon him), sought permission to enter, then put his mouth inside the curtain and began to embrace (kiss) him. Then he asked: What is it that it is not permissible to withhold? He said: "Salt and water." Then he asked: What is it that it is not permissible to withhold? He said: "The more good you do, the better." Then he asked: What is it that it is not permissible to withhold? He said: "The more good you do, the better," and he sufficed with only salt and water. Imam Darimi (may Allah have mercy on him) was asked: Do you also say the same? He nodded his head in affirmation.