5th Ayah from Surah Al Fajr
Is there [not] in [all] that an oath [sufficient] for one of perception?
is this oath strong enough for a rational person?
There is indeed in them (the above oaths) sufficient proofs for men of understanding (and that, they should avoid all kinds of sins and disbeliefs, etc.)!
-Is there (not) in such an oath (enough assurance) for a man of sense?-
There surely is an oath for thinking man.
Is there (not) in these an adjuration (or evidence) for those who understand?