كتاب المظالم : Hadeeth No:2284 : 'Abdullah bin Umar:
Allah's Apostle said, "A Muslim is a brother of another Muslim, so he
should not oppress him, nor should he hand him over to an oppressor.
Whoever fulfilled the needs of his brother, Allah will fulfill his
needs; whoever brought his (Muslim) brother out of a discomfort, Allah
ابواب سترة المصلى : Hadeeth No:480 : Anas Ibn Malik:
Whenever the Prophet went for answering the call of nature, I and another boy used to go after him with a staff, a stick or an 'Anza and a tumbler of water and when he finished from answering the call of nature we would hand that tumbler of water to him.