It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that once I spent the night at the house of my maternal aunt, Sayyida Maymunah (may Allah be pleased with her). The Prophet (peace and blessings be upon him) woke up during a part of the night, performed ablution from a water-skin, and stood up for prayer. I also stood up when I saw the Prophet (peace and blessings be upon him) doing so, performed ablution from the water-skin, and stood on his left side. The Prophet (peace and blessings be upon him) took hold of me by the waist and made me stand on his right side.