The 88th prohibition is that we are forbidden from cutting the head-opening of the kohen gadol's robe. It must remain woven to serve as a border.

The source of this prohibition is G‑d's statement1 (exalted be He), "[It shall have an opening for the head in the middle, and this opening shall have a woven border all around it] like there is around the head opening of a coat of mail. Do not cut it."

One who cuts it with scissors, etc.2 is punished by lashes.