Al-Fath • EN-TAFSIR-IBN-ABBAS
﴿ ۞ لَّقَدْ رَضِىَ ٱللَّهُ عَنِ ٱلْمُؤْمِنِينَ إِذْ يُبَايِعُونَكَ تَحْتَ ٱلشَّجَرَةِ فَعَلِمَ مَا فِى قُلُوبِهِمْ فَأَنزَلَ ٱلسَّكِينَةَ عَلَيْهِمْ وَأَثَٰبَهُمْ فَتْحًۭا قَرِيبًۭا ﴾
“INDEED, well-pleased was God with the believers when they pledged their allegiance unto thee [O Muhammad] under that tree, for He knew what was in their hearts; and so He bestowed inner peace upon them from on high, and rewarded them with [the glad tiding of] a victory soon to come”
Allah then mentioned His pleasure with those who swore allegiance at the pledge of Ridwan, saying: (Allah was well pleased with the believers when they swore allegiance unto thee beneath the tree) when they swore allegiance to you at al-Hudaybiyyah under the Samurah tree; they were about 1,500 men who swore allegiance to assist and defend the Prophet and to remain in fighting, if need be, till death, (and He knew what was in their hearts) of truthfulness and loyalty, (and He) Allah Exalted is He (sent down peace of reassurance) tranquillity (on them) and removed zealotry from them, (and hath rewarded them) after this (with a near victory) the conquest of Khaybar, soon after that;