Surah An Nur Tafseer

if she bears witness four times by Allah, that he is telling a lie. And the fifth; should be that the wrath of Allah be upon her if he speaks the truth.

The wrath of Allah is mentioned specially in the case of the woman, because usually a man would not go to the extent of exposing his wife and accusing her of Zina unless he is telling the truth and has good reason to do this, and she knows that what he is accusing her of is true. So in her case the fifth testimony calls for the wrath of Allah to be upon her, for the one upon whom is the wrath of Allah, is the one who knows the truth yet deviates from it.

Then Allah mentions His grace and kindness to His creation in that He has prescribed for them a way out of their difficulties.

Allah says