Muḥammad ibn Abī Ḥātim Al-Warrāq رحمه الله mentioned,

“I heard him [Muḥammad ibn Ismā‘īl Al-Bukhārī رحمه الله] say, ‘I did not go into the company of any scholar [with the intention of benefitting from him] except that his benefitting from me was greater that that of mine from him.’”[1]