Mu'jam Kabir Tabarani 315 — When my father prayed in the mosque, he

Mus'ab bin Sa'd said: When my father prayed in the mosque, he would keep it light but complete the bowing (ruku') and prostration; and when he prayed at home, he would lengthen the bowing, the prostration and the prayer. I asked: Dear father! When you pray in the mosque you keep it light, and when you are alone at home you lengthen it? He said: "O my son! We are leaders (imams); we are followed."