Tybalt, liest thou there in thy bloody sheet?
O, what more favour can I do to thee,
Than with that hand that cut thy youth in twain
To sunder his that was thine enemy?
Forgive me, cousin!

– William Shakespeare

Romeo and Juliet, Act 5, Scene 3. When Romeo notices the body of Tybalt in the Capulet tomb he feels guilty over killing him. Asking for forgiveness, he vows to make it up to Tybalt by killing his killer – himself!