Tawakkul (Arabic: تَوَكُّل) is an Arabic word which literally means reliance-on or trust-in and it is one of the most important topics in Islamic ethic, because it related to the essential part of monotheism. Therefore, he who does not believe in the existence and absolute power of Allah will find it so difficult to trust or rely on him. In fact, the real meaning of tawakkul lies in the word “La-ilaaha -illallah, wa laa- hawla wa laa quwwata illa billaahil ‘Alliyil Adheem”, or the word “Laa hawla wa laa quwwata illa billah”. Thus the aboved words should only be expressed by the person who realized and believed that; he is not an independent entity and he is in need of independent entity and absolute power in all of his affairs.
the active participle form of tawakkul is used in 38 passages in the Qur'an.
Since early times in Islam there has been debate as to the extent of tawakkul as a virtue in everyday life. This debate centered around questions such as whether or not tawakkul allowed for God to use intermediary causes, and the degree of reliance on God. Views of extreme and total dependence on God to the point of pure fatalism were popular among rejectionist ascetics. Thinkers such as Bisṭāmī instead advocate the virtue of "kasab", or "earning a living".