What did the Prophet Muhammad (saw) say regarding the most virtuous deed one can do to achieve Allah's reward?
 Narrated `Abdullah bin `Amr:                     That Allah's Apostle said, "There are forty virtuous deeds and the best of them is the Maniha of a shegoat, and anyone who does one of these virtuous deeds hoping for Allah's reward with firm confidence that he will get it, then Allah will make him enter Paradise because of Hassan (a subnarrator) said, "We tried to count those good deeds below the Maniha; we mentioned replying to the sneezer, removing harmful things from the road, etc., but we failed to count even fifteen."