3:143
وَلَقَدْ كُنتُمْ تَمَنَّوْنَ ٱلْمَوْتَ مِن قَبْلِ أَن تَلْقَوْهُ فَقَدْ رَأَيْتُمُوهُ وَأَنتُمْ تَنظُرُونَ
And you had certainly wished for martyrdom before you encountered it, and you have [now] seen it [before you] while you were looking on.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
The Wisdom Behind the Losses Muslims Suffered During Uhud
Allah states to His believing servants who suffered losses in the battle of Uhud, including seventy dead,
قَدْ خَلَتْ مِن قَبْلِكُمْ سُنَنٌ
(137... Many similar ways (and mishaps of life) were faced before you), for the previous nations who followed their Prophets before you, they too suffered losses. However, the good end was theirs, and the ultimate defeat was for the disbelievers. This is why Allah said,
فَسِيرُواْ فِى الاٌّرْضِ فَانْظُرُواْ كَيْفَ كَانَ عَـقِبَةُ الْمُكَذِّبِينَ
(so travel through the earth, and see what was the end of those who denied). Allah said next,) (3:137 end...)