﴿ فَبَعَثَ ٱللَّهُ غُرَابًۭا يَبْحَثُ فِى ٱلْأَرْضِ لِيُرِيَهُۥ كَيْفَ يُوَٰرِى سَوْءَةَ أَخِيهِ ۚ قَالَ يَٰوَيْلَتَىٰٓ أَعَجَزْتُ أَنْ أَكُونَ مِثْلَ هَٰذَا ٱلْغُرَابِ فَأُوَٰرِىَ سَوْءَةَ أَخِى ۖ فَأَصْبَحَ مِنَ ٱلنَّٰدِمِينَ ﴾

“Thereupon God sent forth a raven which scratched the earth, to show him how he might conceal the nakedness of his brother's body. [And Cain] cried out: "Oh, woe is me! Am I then too weak to do what this raven did, and to conceal the nakedness of my brother's body?" - and was thereupon smitten with remorse.”

(Then Allah sent a raven scratching up the ground) turning up the ground to bury a dead raven, (to show him) Cain (how to hide his brother's naked corpse) in the ground. (He said: Woe unto me! Am I not able to be as this raven) in his ability (and so hide my brother's naked corpse) in the ground? (And he became repentant) he was repentant at not being able to cover his brother's naked corpse, but not repentant for having killed him.