Ali 'Imran 3:123

<h2>The Battle of Uhud</h2><p>According to the majority of scholars, these Ayat are describing the battle of Uhud, as Ibn `Abbas, Al-Hasan, Qatadah, As-Suddi and others said. The battle of Uhud occurred on a Saturday, in the month of Shawwal on the third year of Hijrah. `Ikrimah said that Uhud occurred in the middle of the month of Shawwal, and Allah knows best.</p><h2>The Reason Behind the Battle of Uhud</h2><p>The idolators suffered many casualties among their noble men at the battle of Badr. The caravan that Abu Sufyan led (before Badr) returned safely to Makkah, prompting the remaining Makkan leaders and the children of those who were killed at Badr to demand from Abu Sufyan to, "Spend this money on fighting Muhammad!" Consequently, they spent the money from the caravan on warfare expenses and mobilized their forces including the Ahabish tribes (tribes living around the city). They gathered three thousand soldiers and marched until they camped near Uhud facing Al-Madinah. The Messenger of Allah ﷺ led the Friday prayer and when he finished with it, he performed the funeral prayer for a man from Bani An-Najjar called Malik bin `Amr. The Prophet then asked the Muslims for advice, if they should march …

Allah had already given you the victory at Badr, when ye were contemptible. So observe your duty to Allah in order that ye may be thankful.

Allah had helped you at Badr, when ye were a contemptible little force; then fear Allah; thus May ye show your gratitude.

And Allah has already made you victorious at Badr, when you were a weak little force. So fear Allah much [abstain from all kinds of sins and evil deeds which He has forbidden and love Allah much, perform all kinds of good deeds which He has ordained] that you may be grateful.

God had given you victory at Badr, when you were weak. So fear God, that you may be thankful.