Narrated Abu Hurairah [radhi-yAllâhu 'anhu]: The Prophet [sal-Allâhu 'alayhi wa sallam] said, "No Salât (prayer) is more heavy (harder) for the hypocrites than the Fajr and the 'Ishâ prayer; but if they knew the reward for these Salât (prayers) at their respective times, they would certainly present themselves (in the mosques) even if they had to crawl." (Bukhari, Muslim)
