The Poetry:

أعلمه الرماية كل يوم فلما اشتد ساعِدُهُ رماني

“I taught him archery everyday, and when he got good at it, he threw an arrow at me.”

Note: A couple of lines that are commonly used to express that some people are ungrateful to those who taught them.

Mentioned by

AbdulFattaah Bin Uthman
Abu Fajr