Holy Qur’an 48:19

Surely, Allah was well pleased with the believers when they were swearing allegiance to thee under the Tree, and He knew what was in their hearts, and He sent down tranquillity on them, and He rewarded them with a victory near at hand;

Translation: Maulawi Sher Ali (Ahmadiyya Muslim Jamaat)

Surah 48: Al-Fath