Zechariah 9:9 is the OT prophecy of the king coming on a donkey — directly quoted here as the event fulfills it.

Matthew 21:1-7 is the parallel account of Jesus sending disciples to get the donkey, providing more detail on how the donkey was obtained.

Mark 11:1-7 is the parallel account of the donkey being brought, with additional narrative of the disciples' actions and the owners' response.

Luke 19:29-35 is the parallel account of the donkey being fetched, including the dialogue with the owners and the placing of cloaks.

Luke 19:35 describes the disciples throwing their cloaks on the colt and setting Jesus on it — a specific detail of the same riding event.