The question of the sinlessness of the prophets is one to which considerable attention has been paid by Muslim theologians. The orthodox belief is that they are free from sin. Some think that their freedom from sin is because the grace of God being ever in them in the richest fulness they are kept in the right path. The Ash'arians believe that the power of sinning is not created in them.[144] The Mutazilites deny this, but admit the existence of some quality which keeps them from evil. These theories do not agree with actual facts. Prophets like other men commit faults, but here comes in the Muslim distinction of sins into gunah-i-kabira "great sins," and gunah-i-saghira "little sins." The gunah-i-kabira are, murder, adultery, disobedience to God and to parents, robbing of orphans, to accuse of adultery, to avoid fighting against infidels, drunkenness, to give or to take usury, to neglect the Friday prayers and the Ramazan fast, tyranny, backbiting, untrustworthiness, forgetting the Quran after reading it, to avoid giving true or to give false witness, lying without sufficient reason,[145] to swear falsely or to swear by any other than God, flattery of tyrants, false judgments, giving short weight or measure, {155} magic, gambling, approval of the ceremonies of infidels, boasting of one's piety, calling on the names of deceased persons and beating the breast at such times,[146] dancing, music, neglect when opportunity offers of warning other persons with regard to the "commands and prohibitions" of God, disrespect to a Hafiz, to shave the beard, to omit saying the "darud" (_i.e._ on whom and on whose family be the peace and mercy of God) whenever the name of Muhammad is mentioned.[147] These are all "great sins" and can only be forgiven after due repentance: the "little sins" are forgiven if some good actions are done. "Observe prayer at early morning, at the close of day, and at the approach of night; for the _good deeds drive away the evil deeds_." (Sura xi. 116). Men may commit sin wittingly or unwittingly. It is the universal belief that a prophet never commits the greater sins in either way; but there is a difference of opinion with regard to the lesser sins. Some hold that they can do them unwittingly, though even then it is not in any thing connected with their office. Others again limit even this frailty to the period before "wahi" (inspiration) comes upon them. The general opinion, however, is that they are free from all sin, whether great or small. The frailties which they show are merely reckoned as faults and slight imperfections not amounting to sin.