Dalil
العربية

Quran Yusuf 12:104

وَمَا تَسۡـَٔلُهُمۡ عَلَيۡهِ مِنۡ أَجۡرٍۚ إِنۡ هُوَ إِلَّا ذِكۡرٞ لِّلۡعَٰلَمِينَ

Translation

And you do not ask of them for it any payment. It is not except a reminder to the worlds.