Surah Al-Ahzab 33:56

إِنَّ ٱللَّهَ وَمَلَـٰٓئِكَتَهُۥ يُصَلُّونَ عَلَى ٱلنَّبِىِّ ۚ يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ صَلُّوا۟ عَلَيْهِ وَسَلِّمُوا۟ تَسْلِيمًا

Indeed, Allāh confers blessing upon the Prophet, and His angels [ask Him to do so]. O you who have believed, ask [Allāh to confer] blessing upon him and ask [Allāh to grant him] peace.

Translation: Saheeh International

Tafsir

Indeed God and His angels bless the Prophet Muhammad (s). O you who believe invoke blessings on him and invoke peace upon him in a worthy manner in other words say ‘O God bless our master Muhammad and grant him peace’ Allāhumma sallī ‘alā sayyidinā Muhammad wa-sallim.

Excerpt from Tafsir al-Jalalayn, commentary on 33:56, via Quran.com. The reader has the full commentary and 9 more tafsirs.