Reference: Siyar A’laam an-Nubalaa – Volume 7, Page 432
Ayyoob ibn al-Mutawakkil said:
If Khaleel ibn Ahmad al-Furaahaydee benefited someone with something, [out of humility] he would not let it be known that he benefited him, [however] if he himself benefited from someone in any way, he would [appreciatively] let him know that he benefited from him.