Al-Fath 48:18

Allah was much pleased with the believers when they pledged allegiance to you [O Prophet] under the tree. He knew what was in their hearts, so He sent down tranquility upon them and rewarded them with an imminent conquest[10],

[10] The conquest of Khaybar occurred in 7 A.H./628 C.E, which preceded that of Makkah.

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[1514]

[1514] That of Khaybar, which preceded the conquest of Makkah.

18. Indeed, Allâh was pleased with the believers when they gave the Bai‘ah (pledge) to you (O Muhammad صلى الله عليه وسلم) under the tree: He knew what was in their hearts, and He sent down As-Sakînah (calmness and tranquillity) upon them, and He rewarded them with a near victory.

Allah was well pleased with the believers when they swore allegiance unto thee beneath the tree, and He knew what was in their hearts, and He sent down peace of reassurance on them, and hath rewarded them with a near victory;