الصلاة : Hadeeth No:1630
Zaid b. Arqam, on seeing some people praying in the forenoon, said: They well know that prayer at another time than this is more excellent, for Allaah's Messenger (sallAllaahu alayhi wa sallam) said: The prayer of those who are penitent is observed when your weaned camels feel the heat of the sun....
الزكاة : Hadeeth No:2146
A hadith like this has been narrated by Abu Huraira through another chain of transmitters....