For ALLAH is well aware of all that ye do.

For ALLAH is well aware of all that ye do.

Bismillah Ar Rahman Ar Raheem

"Behold ye were climbing up the high ground, without even casting a side glance at anyone,and the Messenger in your rear was calling you back. There did ALLAH give you one distress after another by way of requital,to teach you not to grieve for (the booty) that had escaped you and for (the ill) that had be fallen you. For ALLAH is well aware of all that you do. "
[Surah Ali Imran 3:153]

It would seem that a party of horsemen led by the dashing Khalid ibn Walid came through the gap in the passes where the Muslim archers should have been,and in the confusion that arose,the retreating foe rallied and turned back on the Muslim. From the low ground on the bank of the Nullah,the Muslims retreated in their turn and tried to gain the hill. They had a double loss: (1) They were battled of the booty they had run after,and (2) their own lives and the lives of their whole army were in danger,and many lives were actually lost from their ranks. Their own lives being in danger; they had hardly time grieve for the loss of booty or the general calamity,but it steadied them,and some of them stood the test.

Subhana ALLAH