166. " and what befell you on the day when both troops met was by allah's leave and that he might distinguish the believers." commentary: allah has set a cause or causes for any effect, then either failure or victory has some secrets. your failure in the battle of 'uh¤ud related to the law of causation. it was you who relaxed your efforts in the battle and did not come into agreement with other strivers, and were greedy to gather the spoils of war. this is allah's way of treatment and the divine law is found in all fights. " and what befell you on the day when both troops met was by allah's leave..." explanations: 1. failures and triumphs take place under the will of allah, and his leave is the same as allah's way of treatment. "... by allah's leave ..." 2. bitter and sweet happenings are the site of trial and recognition of human beings. "... and that he might distinguish the believers."