﴿ وَلَا تَهِنُوا۟ فِى ٱبْتِغَآءِ ٱلْقَوْمِ ۖ إِن تَكُونُوا۟ تَأْلَمُونَ فَإِنَّهُمْ يَأْلَمُونَ كَمَا تَأْلَمُونَ ۖ وَتَرْجُونَ مِنَ ٱللَّهِ مَا لَا يَرْجُونَ ۗ وَكَانَ ٱللَّهُ عَلِيمًا حَكِيمًا ﴾

“And be not faint of heart when you seek out the [enemy] host. If you happen to suffer pain, behold, they suffer pain even as you suffer it: but you are hoping [to receive] from God what they cannot hope for. And God is indeed all-knowing, wise.”

Allah then encouraged the believers to go in pursuit of Abu Sufyan and his men after the Day of Uhud, saying: (Relent not) do not slacken or weaken (in pursuit of the enemy) Abu Sufyan and his men. (If ye are suffering) from your wounds, (lo! they suffer) from their wounds (even as ye suffer and ye hope from Allah) His reward and fear His torment (that for which they cannot hope. Allah is ever Knower) of your wounds, (Wise) He enjoined upon you to go in pursuit of these people.