Surah An-Nur, ayah 63

لَّا تَجۡعَلُواْ دُعَآءَ ٱلرَّسُولِ بَيۡنَكُمۡ كَدُعَآءِ بَعۡضِكُم بَعۡضٗاۚ قَدۡ يَعۡلَمُ ٱللَّهُ ٱلَّذِينَ يَتَسَلَّلُونَ مِنكُمۡ لِوَاذٗاۚ فَلۡيَحۡذَرِ ٱلَّذِينَ يُخَالِفُونَ عَنۡ أَمۡرِهِۦٓ أَن تُصِيبَهُمۡ فِتۡنَةٌ أَوۡ يُصِيبَهُمۡ عَذَابٌ أَلِيمٌ ٦٣

Llā taj'alū du'ā'ar-rasūli baynakum kadu'ā'i ba'dikum ba'dan qad ya'lamullāhul-ladhīna yatasallalūna minkum liwādhan falyahdharil-ladhīna yukhālifūna 'an amrihī an tusībahum fitnatun aw yusībahum 'adhābun alīm

Do not make [your] calling of the Messenger among yourselves as the call of one of you to another. Already Allāh knows those of you who slip away, concealed by others. So let those beware who dissent from his [i.e., the Prophet's] order,¹⁰⁰⁴ lest fitnah¹⁰⁰⁵ strike them or a painful punishment.