רבי אביתר

Rabbi Avitar sent to Rav Chisda and spoke to him about Eliyahu and Rabbi Yonatan, his colleague [(as mentioned)]. And HaShem said, "Avitar, my son, thus I say regarding the matter of the concubine in Giv'ah, Gittin [(6b)]. It is written in the book of Gnostic teachings that Rabbi Avitar and Rabbi Yonatan are in the secret of the man and the concubine, and their rectification came to reveal the shortcomings, as mentioned, the letter Pei."