وَإِنْ شِئْتَ لَمْ تُرْقِلْ وَإِنْ شِئْتَ أَرْقَلَتْ
مَخَافَةَ مَلْوِيٍّ مِنَ الْقَدِّ مُحْصَدِ
Meaning: If you wish, the she-camel does not adopt a rapid pace; if you wish, she moves swiftly, as though wary of a strongly twisted rawhide whip.
Lam turqil and arqalat share the idea of rapid trotting while contrasting its negation and occurrence. The key claim is not merely high speed but the rider’s control over the animal’s gait. The twisted whip introduces a motive for urgency; the verse does not have to mean that a blow is delivered at every moment.