Albert Barnes Commentary 2 Kings 4:24

"Then she saddled an ass, and said to her servant, Drive, and go forward; slacken me not the riding, except I bid thee." — 2 Kings 4:24 (ASV)

Do not delay your riding - That is, “Do not delay me in my riding, unless I tell you.” The servant went on foot with the donkey to urge it forward, as is the common custom in the East.