What act and scene in measure for measure does the this title come from?

Act V, scene 1, by the Duke: "The very mercy of the law cries out / Most audible, even from his proper tongue, / 'An Angelo for Claudio, death for death!' / Haste still pays haste, and leisure answers leisure; / Like doth quit like, and Measure still for Measure."

It also comes from a reference to the Sermon on the Mount, Matthew 7:1-2 : "Judge not, that ye be not judged. For with what judgment ye judge, ye shall be judged: and with what measure ye mete, it shall be measured to you again."