Surah An-Nur (The Light), Verse 63

لَا تَجْعَلُوْا دُعَآءَ الرَّسُوْلِ بَیْنَكُمْ كَدُعَآءِ بَعْضِكُمْ بَعْضًا قَدْ یَعْلَمُ اللّٰهُ الَّذِیْنَ یَتَسَلَّلُوْنَ مِنْكُمْ لِوَاذًا فَلْیَحْذَرِ الَّذِیْنَ یُخَالِفُوْنَ عَنْ اَمْرِهٖۤ اَنْ تُصِیْبَهُمْ فِتْنَةٌ اَوْ یُصِیْبَهُمْ عَذَابٌ اَلِیْمٌ ۟

Laa taj'aloo du'aaa'ar Rasooli bainakum ka du'aaa'i ba'dikum ba'daa; qad ya'lamul laahul lazeena yatasallaloona minkum liwaazaa; fal yahzaril lazeena yukhaalifoona 'an amriheee 'an tuseebahum fitnatun aw yuseebahum 'azaabun aleem

“Deem not the summons of the Messenger among yourselves like the summons of one of you to another: Allah doth know those of you who slip away under shelter of some excuse: then let those beware who withstand the Messenger's order, lest some trial befall them, or a grievous penalty be inflicted on them.”

Quran 24:63 (Yusuf Ali Translation)