Posted on 04/10/2012 by __socrates

ISTISNA استثناء
Lit. “Excepting or excluding.” A term used for the custom of exclaiming, “If God will.” It is in accordance with the injunctions of the Qur’an, Surah xviii. 23: “And never say of anything,’Verily, I am going to do that tomorrow,’ without, ‘If God will.'” (Compare James iv. 15: “For ye ought to say, If the Lord will.”)

Based on Hughes, Dictionary of Islam