Musannaf Ibn Abi Shaybah

Hazrat Ubaiyah narrates that I performed ablution for Hazrat Ibn Umar (may Allah be pleased with them), so I stood on his right side and poured water for him. When he finished, he looked at me and said: Where did you learn this etiquette? I said: From my grandfather, Hazrat Nafi’. He said: Congratulations to you.