﴿ فَلَمَّآ أَسْلَمَا وَتَلَّهُۥ لِلْجَبِينِ ﴾

“But as soon as the two had surrendered themselves to [what they thought to be] the will of God, and [Abraham] had laid him down on his face,”

(Then, when they had both surrendered (to Allah)) when they both agreed and consigned the matter to Allah, (and he had flung him down upon his face) and it is said: on his side,