Abdullah bin Shaddad, mentioning the couple who undertook li'an (mutual imprecation), asked Ibn Abbas (may Allah be pleased with them both): Is she the woman about whom the Messenger of Allah (peace and blessings be upon him) said: "If I were to stone anyone without evidence, I would have stoned her"? Ibn Abbas (may Allah be pleased with them both) said: No, that was another woman who had openly committed indecency.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10666