﴿ وَلَا تَهِنُوا۟ وَلَا تَحْزَنُوا۟ وَأَنتُمُ ٱلْأَعْلَوْنَ إِن كُنتُم مُّؤْمِنِينَ ﴾

“Be not, then, faint of heart, and grieve not: for you are bound to rise high if you are [truly] believers.”

Faint not shrink not from fighting the disbelievers neither grieve for what befell you at Uhud for you shall prevail through victory over them if you are truly believers. the response to this last conditional clause is the sum meaning of what has preceded it.