Albert Barnes Commentary 2 Samuel 16:1

"And when David was a little past the top [of the ascent], behold, Ziba the servant of Mephibosheth met him, with a couple of asses saddled, and upon them two hundred loaves of bread, and a hundred clusters of raisins, and a hundred of summer fruits, and a bottle of wine." — 2 Samuel 16:1 (ASV)

A couple of donkeys saddled - These were the donkeys that Mephibosheth and his servant should have ridden. See the note on 2 Samuel 19:26.