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 TaymiyyahRemembrance is to the heart what water is to the fish. And what is the state of a fish that leaves water?
Ibn TaymiyyahSome people have the disease of criticising all the time. They forget the good about others and only mention their faults. They are like flies that avoid the good and pure places and land on the bad and wounds. This is because of the evil within the self and the spoiled nature.
Ibn TaymiyyahDhikr (remembrance of Allah) is to the heart as water is to a fish; see what happens to a fish when it is taken out of water
Ibn Taymiyyah