A version of the parable also appears in the Gnostic Gospel of Thomas (Saying 76):[2]

Jesus said, "The Father's kingdom is like a merchant who had a supply of merchandise and found a pearl. That merchant was prudent; he sold the merchandise and bought the single pearl for himself. So also with you, seek his treasure that is unfailing, that is enduring, where no moth comes to eat and no worm destroys."
— Gospel of Thomas 76, Patterson/Meyer translation