It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that a man came to the court of the Prophet and asked, "O Messenger of Allah! Which deed is the best?" The Holy Prophet (peace and blessings be upon him) replied, "To have faith in Allah and to strive in the way of Allah." He asked, "What if I am not able to do that?" The Prophet said, "Then keep yourself away from evil and sinful deeds, for this too is an excellent charity that you will give on your own behalf."