a son who assumes the duties of his agedfather, allowing the father to remain in office, supported by his son, who carries out the father’s responsibilities as deputy[Middle Kingdom and 18th Dynasty]
wḏ.t(w) n bꜣk jm jrt mdw-jꜣw jḫ ḏd.j n.f mdw sḏmyw sḫrw jmjw-ḥꜣt pꜣw sḏm n nṯrw
May your humble servant (i.e. the father) be commanded to make his son his deputy(literally, “a staff of old age”); then I will tell him the words of the listeners, the advice of ancestors who once listened to the gods.
Allen, James Peter (2015) Middle Egyptian Literature: Eight Literary Works of the Middle Kingdom, Cambridge: Cambridge University Press, →ISBN, pages 168–169