Cain and Abel
Then Allah sent a raven scratching the earth, showing him how to bury his brother’s body. He cried, “Woe to me! Am I so helpless that I could not do as this bird?” And he became full of regret.
5:31Then Allah sent a raven scratching up the ground, to show him how to hide his brother's naked corpse. He said: Woe unto me! Am I not able to be as this raven and so hide my brother's naked corpse? And he became repentant.