مسند أحمد

It was narrated that Anas said: We were with 'Umar between Makkah and Madinah, and we looked for the new crescent moon. I was sharp sighted and I saw it, and I started saying to ‘Umar, Don't you see it? He said: I will see it when I am lying in my bed. Then he started telling us about the people of Badr. He said: the Messenger of Allah (ﷺ) ﷺ was showing us the places where they would fall (in battle), saying: “This is where So and so will fall in battle tomorrow, if Allah wills; this is where So and so will fall in battle tomorrow, if Allah wills.” And they started to fall in those places, I said: By the One who sent you with the truth, they did not miss those places; they fell in those places. Then he ordered that they be thrown into a well, and he went to them and said: `O So and so, O So and so, did you find what Allah promised you to be true? For I found what Allah promised me to be true.` 'Umar said: O Messenger of Allah (ﷺ) , are you speaking to people who are now dead? He said: `You do not hear what I am saying any better than they do, but they cannot answer.`