פירוש על מלכים א 1:33

On my personal mule. This will be a sign that he will reign and the beginning of [his] greatness, because a commoner is forbidden to ride on the king’s horse.

upon mine own mule: This is one of the symbols of kingship, that no one should ride on the king's chariot who is not a king.

To Gichon. [Gichon] is the well of Shilo’ach. From this [episode is derived the custom] not to anoint the kings except at the well, to symbolize thereby that his kingship shall continue on and on.²⁷As the waters of a well do.

and bring him frown to Gihon: He chose to anoint him at a river to be a symbol that his kingship will last and survive and expand.