Surah Ash-Shu'ara, ayah 136

26:136

قَالُواْ سَوَآءٌ عَلَيۡنَآ أَوَعَظۡتَ أَمۡ لَمۡ تَكُن مِّنَ ٱلۡوَٰعِظِينَ ١٣٦

Qālū sawā'un 'alaynā awa'azta am lam takum minal-wā'izīn

They said, "It is all the same to us whether you advise or are not of the advisors.