A.T. Robertson Commentary Mark 11:2

"and saith unto them, Go your way into the village that is over against you: and straightway as ye enter into it, ye shall find a colt tied, whereon no man ever yet sat; loose him, and bring him." — Mark 11:2 (ASV)

As ye enter (εισπορευομενο). So also Lu 19:30. Present middle participle.

Colt (πωλον). So Lu 19:30. Matthew 21:2 speaks of the ass (ονον) also.

Whereon no one ever yet sat (εφ' ον ουδεις ανθρωπων εκαθισεν). So Lu 19:30.