وَتَجْتَرِي بِقُبْحِ سِيرَتِكَ عَلَى عَالِمِ سَرِيرَتِكَ؟
And dare to act wickedly before the Knower of your inmost secrets?
Sīrah is conduct or way of life; sarīrah is an inward secret or concealed intention. Tajtariʾu means to act daringly or presumptuously.
The near-rhyme sīratika / sarīratika heightens the contrast between what a person does outwardly and what is known of the inner self.