YORUBA PROVERB

A fi ẹ̀gúsí jẹ iyán tán, èpo rẹ̀ wá di oun àìjí rí. / 

After melon had been used to eat pounded yam, its peelings now became offensive.

[Once people have achieved their goals, they often ignore or discredit those who helped them along the way]