Al-A'raf - 7:93

فَتَوَلَّى عَنْهُمْ وَقَالَ يَا قَوْمِ لَقَدْ أَبْلَغْتُكُمْ رِسَالاَتِ رَبِّي وَنَصَحْتُ لَكُمْ فَكَيْفَ آسَى عَلَى قَوْمٍ كَافِرِينَ
[7:93]
So he turned away from them and said: O my people! certainly I delivered to you the messages of my Lord and I gave you good advice; how shall I then be sorry for an unbelieving people?
So Shu'aib left them, saying: "O my people! I did indeed convey to you the messages for which I was sent by my Lord: I gave you good counsel, but how shall I lament over a people who refuse to believe!"
So he turned from them and said: O my people! I delivered my Lord's messages unto you and gave you good advice; then how can I sorrow for a people that rejected (truth)?