«وَلَا نَرْحَلُ إِلَّا كُلَّ هَوْجَاءَ»
We set out only on a swift-moving mount.
In this passage hawjāʾ is used for a speedy she-camel. Treating it automatically as 'storm' or a human temperament would distort the immediate travel setting. Narḥalu means 'we depart' or 'set out'.
The company is united in attitude and swift in motion. The vigorous adjective makes the pace of the journey almost physically perceptible.