It is strange that a person may find it easy to protect himself from: eating Haraam, oppression and injustice, adultery, theft, drinking khamr (alcoholic drinks), and from unlawful looking, but it is hard for him to restrain the movement of his tongue. How often do we see people who are very cautious about falling into shameful deeds or injustice, but their tongue lashes against the living and the dead and they don't mind it?
Ibn TaymiyyahThe one who is [truly] imprisoned is the one whose heart is imprisoned from Allah and the captivated one is the one whose desires have enslaved him.
Ibn TaymiyyahThe People of the Sunnah are the most knowledgeable of mankind concerning the truth, and the most merciful of the creation towards the rest of creation.
Ibn Taymiyyah