﴿ إِنَّ ٱللَّهَ وَمَلَٰٓئِكَتَهُۥ يُصَلُّونَ عَلَى ٱلنَّبِىِّ ۚ يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ صَلُّوا۟ عَلَيْهِ وَسَلِّمُوا۟ تَسْلِيمًا ﴾

“Verily, God and His angels bless the Prophet: [hence,] O you who have attained to faith, bless him and give yourselves up [to his guidance] in utter self-surrender!”

(Lo! Allah and His angels shower blessings on the Prophet. O ye who believe! Ask blessings on him) pray for him (and salute him with a worthy salutation) and resign yourselves to his command.