A respected scholar had a debate with one of the heretics, may God curse them separately, and could not prevail over him with argument; he surrendered and returned. Someone said to him: Despite all the knowledge and ادب you possess, you could not argue with an irreligious person? He said: My knowledge is the Quran, Hadith, and the sayings of the elders, and he does not believe in these and does not listen; what is the use of me hearing his blasphemy?

The one who does not refrain from him with the Quran and Hadith

The answer to him is: do not answer him.