4:15Those of your women who commit lewdness, you must have four witnesses against them, from among you. If they testify, confine them to the homes until death claims them, or God makes a way for them.

4:135O you who believe! Stand firmly for justice, as witnesses to God, even if against yourselves, or your parents, or your relatives. Whether one is rich or poor, God takes care of both. So do not follow your desires, lest you swerve. If you deviate, or turn away—then God is Aware of what you do.