Reference for Sanhedrin 115:1

שהיתה הורתו שלא בקדושה ולידתו בקדושה יש לו שאר האם ואין לו שאר האב

born, but not conceived in sanctity,<span class="x" onmousemove="('comment',' I.e., whose mother was a heathen at his conception, but became a Jewess before his birth. ');">¹</span>

Jastrow

Jastrow