Yusuf, 104 Ayah
12:104
وَمَا تَسۡـَٔلُهُمۡ عَلَيۡهِ مِنۡ أَجۡرٍۚ إِنۡ هُوَ إِلَّا ذِكۡرٞ لِّلۡعَٰلَمِينَ ١٠٤
Wa Mā Tas'aluhum `Alayhi Min 'Ajrin ۚ 'In Huwa 'Illā Dhikrun Lil`ālamīna
And you do not ask of them for it any payment. It is not except a reminder to the worlds.