As you can taste a pot full of food with a spoon likewise someone's tounge can tell you about his heart.
Ibn Qayyim Al-JawziyyaSins have many side-effects. One of them is that they steal knowledge from you.
Ibn Qayyim Al-JawziyyaAnd verily for everything that a slave loses there is a substitute, but the one who loses Allah will never find anything to replace Him.
Ibn Qayyim Al-JawziyyaThe perfection of Tawheed is found when there remains nothing in the heart except Allaah
Ibn Qayyim Al-Jawziyya