24:63
لَّا تَجْعَلُوا۟ دُعَآءَ ٱلرَّسُولِ بَيْنَكُمْ كَدُعَآءِ بَعْضِكُم بَعْضًۭا ۚ قَدْ يَعْلَمُ ٱللَّهُ ٱلَّذِينَ يَتَسَلَّلُونَ مِنكُمْ لِوَاذًۭا ۚ فَلْيَحْذَرِ ٱلَّذِينَ يُخَالِفُونَ عَنْ أَمْرِهِۦٓ أَن تُصِيبَهُمْ فِتْنَةٌ أَوْ يُصِيبَهُمْ عَذَابٌ أَلِيمٌ
Do not make [your] calling of the Messenger among yourselves as the call of one of you to another. Already Allah knows those of you who slip away, concealed by others. So let those beware who dissent from the Prophet's order, lest fitnah strike them or a painful punishment.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
The Etiquette of addressing the Prophet
Ad-Dahhak said, reporting from Ibn `Abbas: "They used to say, `O Muhammad,' or `O Abu Al-Qasim,' but Allah forbade them to do that, as a sign of respect towards His Prophet , and told them to say, `O Prophet of Allah,' `O Messenger of Allah."' This was also the view of Mujahid and Sa`id bin Jubayr. Qatadah said: "Allah commanded that His Prophet should be treated with respect and honor, and that he should be a leader." Muqatil said concerning the Ayah:
لاَّ تَجْعَلُواْ دُعَآءَ الرَّسُولِ بَيْنَكُمْ كَدُعَآءِ بَعْضِكُمْ بَعْضاً
(Make not the calling of the Messenger among you as your calling one of another.) "When you address him, do not say, `O Muhammad,' or `O son of `Abdullah'; rather honor him and say, `O Prophet of Allah,' or, `O Messenger of Allah.'
لاَّ تَجْعَلُواْ دُعَآءَ الرَّسُولِ بَيْنَكُمْ كَدُعَآءِ بَعْضِكُمْ بَعْضاً
(Make not the calling of the Messenger among you as your calling one of another.) A second view concerning the meaning of the Ayah is that it means `do not think that if he prays against you it is like when anyone else prays against you, because his prayers will be answered; so beware lest he prays against you and you will be doomed.' Ibn Abi Hatim recorded this from Ibn `Abbas, Al-Hasan Al-Basri and `Atiyyah Al-`Awfi. And Allah knows best.