Abdullah bin Amr (may Allah be pleased with them both) says that the Messenger of Allah (peace and blessings be upon him) said: "There is no li'an between four: between a free man and a slave woman, between a free woman and a slave, between a Muslim and a Jewish woman, and between a Muslim and a Christian woman."
Abu al-Hasan al-Daraqutni said: Uthman bin Abd al-Rahman is al-Waqqasi, who is matruk al-hadith (abandoned in hadith).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب اللعان / 15299