Abu Dharr reported that the Prophet, may Allah bless him and granthim peace, was asked, "Which is the best action?" He replied, "Belief inAllah and jihad in His Way." He was asked, "Which slaves are best?" Hereplied, "The highest in price and the most precious to their people."He said, "What do you think I should do if I am unable to fight?" He said,"Help someone in trouble or work for someone who does not work." He said,"What do you think that I should do if I am too weak (to act accordingly)?"He said, "Spare people your evil. That is a sadaqa which you bestow onyourself."
English reference: Book 14, Hadith 305
Arabic reference: Book 1, Hadith 305