Reason of revelation of AIHih's Statement
34) Narrated Ibn 'Abbas : Allah's Messenger said: When your brethren were killed as martyrs in the battle of Uhud, Allah put their souls into some green birds which arrived at the rivers of Paradise, ate from its fruits and took shelter beside lanterns, made of gold, and suspended in the shade of the Divine Throne. When they enjoued eating, drinking and sleeping, they said: Who will convey to our brethren on earth that: we are alive in Paradise where we are provided with sustenance, so that they would neither renounce fighting in the way of Allah nor retreat at the time of war. Allah the Glorified said: I shall inform them of you. The Prophet said: So Allah revealed this verse: "Don't consider those killed in the way of Allah as dead, rather they are alive with their Lord being provided with sustenance".(3:169)
(This Haditb is good and reported in Sunan Abi Da'ud).