when a person attains enlightenment and immortality, even their pets and livestock follow them to heaven

传说汉朝刘安得道成仙，一人得道，鸡犬升天。

when a person achieves power and influence, their associates and family members benefit as well

自从他当了局长，所有的亲戚都得到了关照，真是一人得道，鸡犬升天。