لَقَدْ رَضِيَ اللَّهُ عَنِ الْمُؤْمِنِينَ إِذْ يُبَايِعُونَكَ تَحْتَ الشَّجَرَةِ فَعَلِمَ مَا فِي قُلُوبِهِمْ فَأَنزَلَ السَّكِينَةَ عَلَيْهِمْ وَأَثَابَهُمْ فَتْحًا قَرِيبًا
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سورة الفتح
(48/18) Certainly Allah was pleased with the believers when they swore allegiance to you under that tree, and He knew what was in their hearts. So He sent down As-Sakînah (tranquility) on them and He rewarded them with a near conquest.
Surah Al-Fath