Sunan an-Nasa'i 1003

Hammad ibn Ismaʿil ibn Ibrahim ibn ʿUlayyah, Abu al-Hasan, informed us: My father narrated to us, from Dawud al-Taʾi, from ʿAbd al-Malik ibn ʿUmayr, from Jabir ibn Samurah, who said: “Some people of Kufa spoke ill of Saʿd to ʿUmar. They said, ‘By Allah, he does not pray properly.’ He said: ‘As for me, I lead them in prayer as the Messenger of Allah (peace and blessings be upon him) prayed, and I do not deviate from that. I prolong the first two rakʿahs and shorten the last two.’ ʿUmar said: ‘That is what I expected of you.’”