أَحَلْتُ عَلَيْهَا بِالْقَطِيعِ فَأَجْذَمَتْ
وَقَدْ خَبَّ آلُ الْأَمْعَزِ الْمُتَوَقِّدِ
Meaning: I bring the whip toward the she-camel and she surges forward, while heat shimmer dances over a fiercely hot stony expanse.
Al-qaṭīʿ here means a whip, not a flock of animals. Fa-ajdhamat denotes a burst of speed. Al-āl is shimmering, mirage-like air; al-amʿaz is rough, gravelly ground; al-mutawaqqid conveys burning heat. The verse unites rapid action with an exhausting landscape.