Surah Al-Fath, Verse 18

۞ لَّقَدۡ رَضِيَ ٱللَّهُ عَنِ ٱلۡمُؤۡمِنِينَ إِذۡ يُبَايِعُونَكَ تَحۡتَ ٱلشَّجَرَةِ فَعَلِمَ مَا فِي قُلُوبِهِمۡ فَأَنزَلَ ٱلسَّكِينَةَ عَلَيۡهِمۡ وَأَثَٰبَهُمۡ فَتۡحٗا قَرِيبٗا١٨

laqad raḍiya l-lahu ʿani l-mu'minīna idh yubāyiʿūnaka taḥta l-shajarati faʿalima mā fī qulūbihim fa-anzala l-sakīnata ʿalayhim wa-athābahum fatḥan qarīban

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