Reference for Pesachim 62:4
תנן נכרי שהלוה ישראל על חמצו אחר הפסח מותר בהנאה נהי נמי דהרהינו אצלו הא אמרת נכרי מישראל לא קני לא קשיא הא דאמר ליה מעכשיו הא דלא אמר ליה מעכשיו
Now even granted that he deposited it with him, surely you said that a Gentile does not acquire a title from an Israelite? There is no difficulty: there [in the Mishnah] it means that he said to him, 'From now';<span class="x" onmousemove="('comment',' When he deposited the leaven with him he said to him, 'If I do not repay by the stipulated time, the leaven is yours from now'. Hence the leaven stands in the lender's ownership, whether Jew or Gentile.');"><sup>7</sup></span> here [in the Baraitha] it means that he did not say to him, 'From now',<span class="x" onmousemove="('comment',' Therefore, where the Gentile lent to the Jew, all agree that even if the debt was not repaid, the leaven may not be used, because during Passover it was definitely in the Jew's ownership, notwithstanding that it was deposited with the Gentile, because he does not acquire a title from a Jew. But the dispute arises only where the Israelite lent to the Gentile.');"><sup>8</sup></span>