"We set up a just balance for the Day of Resurrection. Thus, no soul will be treated unjustly. Even though it be the weight of one mustard seed, We shall bring it forth to be weighed; and Our reckoning will suffice (21.47)."

Supposing there were nothing to require the Resurrection, the necessity of man's deeds being weighed alone would require an infinitely just and sensitive balance to be set up.