204. Amir al-mu'minin, peace be upon him, said: If someone is not grateful to you, that should not prevent you from good actions, because (possibly) such a person will feel grateful about it who has not even drawn any benefit from it, and his gratefulness will be more than the ingratitude of the denier; And Allah loves those who do good. (Qur'an, 3:134,148; 5:93)