Abu Musa reported that God’s messenger said,“The guidance and knowledge with which God has commissioned me are like abundant rain which fell on some ground. Part of it was good, and absorbing the water, it brought forth abundant herbage and pasture; and there were some bare patches in it which retained the water by which God gave benefit to men, who drank, gave drink and sowed seed. But some of it fell on another portion which consisted only of hollows which could not retain the water or produce herbage. That is like the one who becomes versed in God’s religion and receives benefit from the message entrusted to me by God, so he knows for himself and teaches others ; and it is like the one who does not show regard to that and does not accept God’s guidance with which I have been commissioned.”(Bukhari and Muslim.)