Someone said to Ibn Umar, "Our imam prolongs the prayer."Ibn Umar replied, "Two units of the Messenger of Allah's ﷺ prayer were lighter than, or equal to, a single unit of this man's prayer."
قيل لابن عمر: إن إمامنا يطيل الصلاة؟ فقال ابن عمر: ركعتان من صلاة رسول الله ﷺ أخف أو مثل ركعة من صلاة هذا.
Ibn Jaad narrated it in his Musnad (866, 1358), and Ahmad (5044), both from the hadith of Shubah, from Hayan Bariqi, who said, so he mentioned it.Its chain is hasan because of Hayan bin Iyas Bariqi, also said to be Azdi. Ibn Main deemed him reliable, Ibn Hibban listed him among the reliable narrators, and Abu Hatim said, "A sound shaikh from Wasit."