141. " and that allah may purge those who believe and wipe out the
disbelievers."

commentary:
the arabic word /tamhis/ means to purify from any vice and defect,
and the word /mahq/ in arabic means to decrease gradually.
maybe, in the defeat of 'uh¤ud, allah wished to show the weak
points of muslims to them so that they would think of improving
themselves and decide to recompense their shortcomings in order that they
might be necesserily prepared for the later acts.
sometimes the instructive failures are more convinient than the
victories that cause negligence.

" and that allah may purge those who believe and wipe out the disbelievers."