Sayyiduna Abu Musa Ash'ari (may Allah be pleased with him) narrates from the Noble Prophet (peace and blessings be upon him) that he (peace be upon him) said: The example of what Allah has sent me with of guidance and knowledge is like rain that falls upon the earth. Some of it is a portion that absorbs the water and brings forth much grass and greenery. Another portion is hard and holds the water, so Allah benefits the people with it; they drink from it, give drink to others, and graze their animals. And another portion is barren land that neither retains water nor grows grass (like a smooth rock upon which water falls and flows away). This is the example of the one who understands Allah’s religion and benefits from what Allah has sent me with; he learns and teaches others. And the example of the one who does not pay attention and does not accept the guidance with which I have been sent by Allah.