Charles Ellicott Commentary Proverbs 27:18

"Whoso keepeth the fig-tree shall eat the fruit thereof; And he that regardeth his master shall be honored." — Proverbs 27:18 (ASV)

Whoso keepeth the fig-tree—i.e., tends it carefully year after year, shall eat the fruit thereof when it has come to perfection.

So he that waiteth on his master—i.e., attends to him, observes and follows out his wishes, shall be honoured for his good service. .