Reference for Bava Metzia 169:9
איקלע רבי לאתריה דר' אלעזר בר' שמעון א"ל יש לו בן לאותו צדיק אמרו לו יש לו בן וכל זונה שנשכרת בשנים שוכרתו בשמנה אתייה אסמכיה ברבי ואשלמיה לר' שמעון בן איסי בן לקוניא אחות דאמיה
When he placed fodder for the beasts, their cries could be heard for three miles, and he aimed at casting it [before them] just then when Rabbi entered his privy closet, yet even so, his voice [lifted in pain] was louder than theirs, and was heard [even] by sea-farers. Nevertheless, the sufferings of R. Eleazar son of R. Simeon were superior [in virtue] to those of Rabbi. For whereas those of R. Eleazar son of R. Simeon came to him through love, and departed in love,<span class="x" onmousemove="('comment',' V. supra 84a bottom: he summoned his sufferings, loving them as a means of ennoblement and likewise dismissed them, that he might be free to study. ');"><sup>9</sup></span>