من التواضع أن يشرب الرجل من سؤر أخيه و من شرب من سؤر أخيه ابتغاء وجه الله رفعت له سبعون درجة . . .
"It is a sign of humility that a person drinks the leftover water of his brother, and whoever drinks his brother's leftover water for the sake of Allah's pleasure, seventy ranks are elevated for him."