Overall meaning : There is a group among Moses’s people, Allah states, who are guided by the truth that He has revealed, act justly according to it and thus not wrong people.
He divided Moses’s people into twelve tribes, Allah further states, each of which constituted a large group on its own. Allah revealed to Moses, when his people asked him for water during their wilderness journey, saying, 'Strike the rock with your staff.’ Thereupon twelve springs gushed from it and each tribe knew its drinking place. Allah shaded them with clouds to protect them from the intense heat of the sun in the wilderness and sent down to them manna and quails, saying, 'Eat of the good things We have provided for you.’ However, by disobeying Allah’s command, they did not wrong Him in the least; rather it was themselves they wronged.