The verse says...
The verse says: “…Soon I will cast fear into the hearts of those who disbelieve…” This fact was truly wonderful that the powerful troops of Quraysh were so frightened that some of them were in terrible horror to combat with the small number of Muslim strugglers in the Battle. Then the verse reminds them the command that He had ordained upon the Muslims in the battle-field of the Battle of Badr by the way of the Prophet (S).
The command was that, at the time of fighting against those pagans, they should avoid striking some uneffective blows and not to spend their strength in that state, but they should smite severely upon the entity of the opposite party, upon above their necks; that is, upon their brains and heads. The verse says: “...Therefore smite above the necks...” And, by smiting their fingers, they should cause the enemies’ hands and feet to become inactive.
“That (is your award), therefore taste it, and (know) that for the disbelievers is the chastisement of the (Hell) Fire.”*** They were deserving of that Punishment so that their heads and their fingers should be smited, because they had raised to fight against Allah (s.w.t) and His Messenger (S).
The verse says: “That is because they opposed Allah and His messenger...” Then, the holy verse threatens the opponents of Allah and His Messenger, when it says: “...and whoever opposes Allah and His Messenger, then verily Allah is severe in retribution.” Those who stand to fight against Allah and His Messenger (S), will be destroyed in the world and, in Hereafter, they will abide in an eternal and severe chastisement.
Through the second verse, the Quran says Allah has provided the punishment of destruction and captivity for them to taste in this world. The verse says: “That (is your award), therefore taste it...” That is, this is the decree of Allah. Then, they should examine the taste of the decree of Allah in this world, and know that in other world both they and the totality of infidels will be involved with the divine painful punishment.