لا تَجعَلوا دُعاءَ الرَّسولِ بَينَكُم كَدُعاءِ بَعضِكُم بَعضًا ۚ قَد يَعلَمُ اللَّهُ الَّذينَ يَتَسَلَّلونَ مِنكُم لِواذًا ۚ فَليَحذَرِ الَّذينَ يُخالِفونَ عَن أَمرِهِ أَن تُصيبَهُم فِتنَةٌ أَو يُصيبَهُم عَذابٌ أَليمٌ

Don’t address the Messenger as you address each other. God surely knows those of you who slip away hiding themselves. Let those who defy His commands beware, lest a trial befall them or a grievous penalty be inflicted on them.