Quran 26:136 from Surah Ash-Shu'araa on Divine Marvels.
قَالُواْ سَوَآءٌ عَلَيۡنَآ أَوَعَظۡتَ أَمۡ لَمۡ تَكُن مِّنَ ٱلۡوَٰعِظِينَ
English translation: They said (It is) same to us whether you advise or not you are of the advisors
Transliteration: qalu sawaon alayna awa'azta am lam takun mina al-wa'izina