Reference for Bava Metzia 205:7

אמר רב מרי בריה דרב אשי ומהדר ליה קתיה

Said R. Mari the son of Samuel's daughter:<span class="x" onmousemove="('comment',' He was begotten by a Gentile, who turned proselyte by the time of his birth; and is therefore called by his maternal grandfather, not by his own father. ');">⁷</span>

Jastrow