Two brothers offered a sacrifice. Allah accepted one and not the other, and instead of asking why, the rejected brother turned on the accepted one. The wronged brother refused to raise his hand back. Jealousy became murder, and murder became a man digging in the dirt, ashamed that a crow knew more than he did. Regret came, but too late.
His whole storyWhen you feel jealous
Two of the darkest moments in the prophets' families began with one thought: he is loved more than me.
It started with one thought: "Yusuf and his brother are more loved by our father than we are." They let it grow, and soon they were saying: "Kill Yusuf, or throw him into some land." That one jealous thought led them to the well, and to years of lying to their own father.
His whole story