Reference for Sanhedrin 119:20
ופליגי דרבי חייא בתרוייהו דאמר רבי חייא השומע אזכרה בזמן הזה אינו חייב לקרוע שאם אי אתה אומר כן נתמלא כל הבגד קרעים
Now, does this not affordan ad majus conclusion: If Eglon king of Moab, who was only a heathen andknew but an attribute of God's name, nevertheless arose, how much more somust an Israelite arise when he hears the ShemHameforash.<span class="x" onmousemove="('comment',' Lit., 'the distinguished Name', synonymous with the Shem hameyuhad, the unique Name. Both words designate something which is distinguished from other objects of its kind. (V. J. E., XI, 262) The term also means 'preeminent'. From Rashi here and in 'Er. 18b it appears that he does not regard the Shem hameforash as the Tetragrammaton. But Maimonides (Yad, Yesode Hatorah, VI, 2; Tefilah, XIV, 10) declares that they are identical. In general it was regarded as sinful to utter this Name (Sanh. 90a; 'A.Z. 17b; Kid. 71a), nor was it widely known, being an object of esoteric knowledge (Kid. Ibid; Yer. Yoma 40), though there were exceptions ');"><sup>18</sup></span>