[If one's wife said:] “Konam, my handiwork to Father” or “to your father” or “to my brother” or “to your brother,” he is unable to revoke it; [“Konam,] my work to you” —- he need not revoke it. R' Akiva says: He should revoke it lest she produce more than his due. R' Yochanan ben Nuri says: He should revoke it lest he divorce her, and she will then be forbidden to him.