كسب

اِكْتِسَابِىٌّ ذ [ Acquired knowledge, such as is acquired by study: as also ↓ كَسْبِىٌّ:] opp. to ضَرُورِىٌّ as meaning [natural or instinctive, or] such as the creature has by [Divine] appointment. (Kull p. 232.)