Yerushalmi Bava Batra 8:6 ירושלמי בבא בתרא ח׳:ו׳

MISHNAH: If one writes his properties over to others¹³⁷As a gift “from today, effective after my death”. while neglecting his children, what he did is done¹³⁸If writing the document was accompanied by an act of acquisition on behalf of the beneficiary, it becomes irrevocable. but the Sages do not approve of him. Rabban Simeon ben Gamliel says, if his children did not behave properly, let him be well remembered.

HALAKHAH: “If one writes his properties over to others,” etc. Rebbi Abba bar Mamal said, about one who writes his properties over to others while neglecting his children, the verse says: “their sins were on their bones¹³⁹Ez. 32:27. It is a sin which will cling to his bones even in the grave. In the Babli, 133b, Samuel told his student Rav Jehudah in his law practice never to help anybody to deprive a son of his inheritance..” As the following: A person deposited his properties with Rebbi Abba bar Mamal and told him, if my sons will be useful give them half and keep half. His sons came and took half. Later they came to appeal¹⁴⁰The root of מיעור is ערר “to launch an appeal.” against him. He told them, your father said only: If my sons will be useful give them half and keep half. Now you are badly educated¹⁴¹Greek κακο-παιδευτοί. E reads קקפריגמיניין which Lieberman explains as κακοτραγμόνες “unworthy, useless”., return to me what I gave to you.