Make me to see ‘t; or, at the least, so prove it,
That the probation bear no hinge nor loop
To hang a doubt on; or woe upon thy life!

– William Shakespeare

Othello, Act 3, Scene 3. Othello threatens that he will kill Iago if he has no proof that Desdemona is being unfaithful. He demands visual proof for what Iago is suggesting.