Abu Dawud (may Allah have mercy on him) said: No one corroborated Ibn Uyaynah (may Allah have mercy on him) in saying that he (peace and blessings be upon him) separated the two who performed li'an.
Al-Shaykh (may Allah have mercy on him) said: By this he means in the hadith of al-Zuhri from Sahl bin Sa'd, except for what we have narrated from al-Zubaydi from al-Zuhri. As for the hadith of Ibn Umar (may Allah be pleased with them both), it is as follows.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب اللعان / 15324