Reference for Sanhedrin 126:11
אמר רב נחמן כל ליצנותא אסירא חוץ מליצנותא דעבודת כוכבים דשריא דכתיב כרע בל קרס נבו קרסו כרעו יחדו לא יכלו מלט משא
But if the name is not written, may it then not be mentioned? To this R. Mesharshia objected: [We have learnt:] If one had a protracted issue of matter from his body, lasting as long as three normal issues, which is equivalent to the time of walking from Gadyawan to Shiloh, namely, as long as it takes to perform two ritual immersions, and dry oneself twice, he is a <i>zab</i> in all respects.<span class="x" onmousemove="('comment',' One is not considered a zab, with all the laws pertaining thereto, unless he has three separate issues of matter. The minimum overall period for the three combined is the time taken for the issues themselves, (if very short) plus the time necessary to perform two ritual immersions and dry oneself twice, i.e., between the first and second issue, and between the second and third. This is equivalent to the walking time from Gadyasvan to Shiloh. This Mishnah is quoted from Zabin i. 5. where, however, the reading is Gad Yawan (two separate words, lit., 'Greek Fortune') to Siloah. Gad Yawan is probably the name of a pool connected with the Siloah, perhaps Fount of the Virgin. Gad was the name of the god of fortune, but as such it is only mentioned in Isa. LXV, 2, though occurring in the compounds Ba'al Gad and Migdal Gad Dillman (on Isaiah a.l.) suggests that Gad and Meni may have been mere Hebrew appellatives of Babylonian idols otherwise named there. We See from the present passage that Gad was the name of a Deity in Talmudic times. During the Second Temple, Palestine became thickly populated with Greeks (Halevy, Dorah iii, P. 9), and many places bore Greek names; Gad Yawan is an example of such, R. Mesharshia's objection is based on the use of the word Gad, though the name of a deity, by the Tanna of this Mishnah. The Pool of Siloam (the same as Siloah and Shiloah of the Bible, Isa. VIII, 6, Neh. III, 15) is located at the south eastern extremity of the European valley, at the southern part of Ophel. Its source is the Fountain of the Virgin, with which it is connected by a subterranean channel or conduit. Probably to this conduit Isaiah alluded when he spoke of the waters of Shiloah that go softly. Though the direct distance is only 1,100 feet, the passage from one to the other, owing to its winding and Zigzagging nature, measures 1750 feet. ');"><sup>10</sup></span>