If one's son becomes a Vaisnava in the family, he can deliver fourteen generations, up and down. That is the verdict. Not only verdict, this is the version in the Srimad-Bhagavatam.

https://vaniquotes.org/wiki/If_one%27s_son_becomes_a_Vaisnava_in_the_family,_he_can_deliver_fourteen_generations,_up_and_down._That_is_the_verdict._Not_only_verdict,_this_is_the_version_in_the_Srimad-Bhagavatam