 The appetitive faculty makes the will (irāda) arise once the sensitive, the imaginative, or the rational faculties have apprehended something. Appetite, according to al-Fārābī, may be towards knowing or doing a thing, either with the whole body or with some limb or organ. The auxiliaries and subordinates of this faculty are, therefore, all the organs involved in the motion of the body. In other words, the limbs, nerves, and muscles spread throughout the body serve as instruments and subordinates of the appetitive faculty (al-Fārābī VC: 170–171).