The Battle of Badr (3:121 – 2:123)
Quran Talk Blog · Article · April 6, 2015
The Battle of Badr
3:121 Recall that you (Muhammad) were among your people when you set out to assign to the believers their positions for battle. GOD is Hearer, Omniscient.
3:122 Two groups among you almost failed, but GOD was their Lord. In GOD the believers shall trust.
3:123 GOD has granted you victory at Badr, despite your weakness. Therefore, you shall observe GOD, to show your appreciation.
http://en.wikipedia.org/wiki/Battle_of_Badr
How do you show your appreciation?