Surah Al-Fath Verse 18

۞ لَّقَدْ رَضِيَ اللَّهُ عَنِ الْمُؤْمِنِينَ إِذْ يُبَايِعُونَكَ تَحْتَ الشَّجَرَةِ فَعَلِمَ مَا فِي قُلُوبِهِمْ فَأَنزَلَ السَّكِينَةَ عَلَيْهِمْ وَأَثَابَهُمْ فَتْحًا قَرِيبًا

Laqad radiyal laahu 'anil mu'mineena iz yubaayi 'oonaka tahtash shajarati fa'alima maa fee quloobihim fa anzalas sakeenata 'alaihim wa asaa bahum fat han qareebaa

Translation / The Meaning

Certainly was Allah pleased with the believers when they pledged allegiance to you, [O Muhammad], under the tree, and He knew what was in their hearts, so He sent down tranquillity upon them and rewarded them with an imminent conquest