Ameer al-Momineen (a.s) said: “O' Believers! Whoever sees that a wrong act is being done, or a forbidden act is being advertised for and disapproves of these acts with his heart, remains healthy and stays pure from such wrong acts. But whoever forbids such acts verbally is more superior and receives a higher reward. Whoever forbids such acts with his sword in order to establish God's words and reject the oppressors is on the straight path to guidance. He is on the path to prosperity, and his heart will be filled with the light of certitude.”