The One With the Brahmin Heckler
From SN 7.16 - Paccanīka Sutta:

At S›vatthı. Now on that occasion a brahmin named Paccanıkas›ta, Relisher of Contradiction, was residing at S›vatthı. Then it occurred to the brahmin Paccanıkas›ta: “Let me approach the ascetic Gotama and contradict whatever he says.” Now on that occasion the Blessed One was walking back and forth in the open. Then the brahmin Paccanıkas›ta approached the Blessed One and said to him while he was walking back and forth: “Speak Dhamma, ascetic!”


[The Blessed One:]
693 “Well-spoken counsel is hard to understand By one who relishes contradiction, By one with a corrupt mind &lt;386&gt; Who is engrossed in aggression.
694 “But if one has removed aggression And the distrust of one’s heart, If one has cast away aversion, One can understand well-spoken counsel.”


When this was said, the brahmin Paccanıkas›ta said to the Blessed One: “Magnificent, Master Gotama! Magnificent, Master Gotama!… Let Master Gotama remember me as a lay follower who from today has gone for refuge for life.”