Chapter 14, Verse 23, Abraham
سورة إبراهيم
وَأُدۡخِلَ ٱلَّذِينَ ءَامَنُواْ وَعَمِلُواْ ٱلصَّٰلِحَٰتِ جَنَّٰتٖ تَجۡرِي مِن تَحۡتِهَا ٱلۡأَنۡهَٰرُ خَٰلِدِينَ فِيهَا بِإِذۡنِ رَبِّهِمۡۖ تَحِيَّتُهُمۡ فِيهَا سَلَٰمٌ
And those who believed (in the Oneness of Allah and His Messengers and whatever they brought) and did righteous deeds, will be made to enter Gardens under which rivers flow, - to dwell therein forever (i.e. in Paradise), with the permission of their Lord. Their greeting therein will be: Salam (peace!).
Chapter 21, Verse 103, The Prophets
سورة الأنبياء
لَا يَحۡزُنُهُمُ ٱلۡفَزَعُ ٱلۡأَكۡبَرُ وَتَتَلَقَّىٰهُمُ ٱلۡمَلَٰٓئِكَةُ هَٰذَا يَوۡمُكُمُ ٱلَّذِي كُنتُمۡ تُوعَدُونَ
The greatest terror (on the Day of Resurrection) will not grieve them, and the angels will meet them, (with the greeting): "This is your Day which you were promised."
Chapter 33, Verse 44, The Coalition
سورة الأحزاب
تَحِيَّتُهُمۡ يَوۡمَ يَلۡقَوۡنَهُۥ سَلَٰمٞۚ وَأَعَدَّ لَهُمۡ أَجۡرٗا كَرِيمٗا
Their greeting on the Day they shall meet Him will be "Salam: Peace (i.e. the angels will say to them: Salamu 'Alaikum)!" And He has prepared for them a generous reward (i.e. Paradise).
Chapter 33, Verse 56, The Coalition
سورة الأحزاب
إِنَّ ٱللَّهَ وَمَلَٰٓئِكَتَهُۥ يُصَلُّونَ عَلَى ٱلنَّبِيِّۚ يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُواْ صَلُّواْ عَلَيۡهِ وَسَلِّمُواْ تَسۡلِيمًا
Allah sends His Salat (Graces, Honours, Blessings, Mercy, etc.) on the Prophet (Muhammad ﷺ) and also His angels too (ask Allah to bless and forgive him). O you who believe! Send your Salat on (ask Allah to bless) him (Muhammad ﷺ), and (you should) greet (salute) him with the Islamic way of greeting (salutation i.e. AsSalamu 'Alaikum).
Chapter 4, Verse 86, The Women
سورة النساء
وَإِذَا حُيِّيتُم بِتَحِيَّةٖ فَحَيُّواْ بِأَحۡسَنَ مِنۡهَآ أَوۡ رُدُّوهَآۗ إِنَّ ٱللَّهَ كَانَ عَلَىٰ كُلِّ شَيۡءٍ حَسِيبًا
When you are greeted with a greeting, greet in return with what is better than it, or (at least) return it equally. Certainly, Allah is Ever a Careful Account Taker of all things.
