Reference for Chullin 183:49
אחת
for so it is written: In my grave which I bought [karithi] for me.<span class="x" onmousemove="('comment',' Gen. L, 5: also from the root .');"><sup>25</sup></span> 'For fifteen': that is the fifteenth day o Nisan when Israel was redeemed out of Egypt.' Pieces of silver': these are the righteous, for so it is written: He has taken the bag of silver with him.<span class="x" onmousemove="('comment',' Prov. VII, 20. V. Sanh. ');"><sup>26</sup></span> 'And a homer of barley and a half-homer of barley:'<span class="x" onmousemove="('comment',' A homer (in Talmud Kor) consisted of thirty se'ah; so that the verse speaks of thirty units (se'ah) plus fifteen units.');"><sup>27</sup></span> these are the forty-five righteous men on account of whom the world continues to exist. But I know not whether thirty of them are here [in Babylon] and fifteen in the land of Israel, or thirty in the land of Israel and fifteen here [ Babylon]; but when the verse says. And I took the thirty pieces of silver and cast them into the treasury, in the house of the Lord,<span class="x" onmousemove="('comment',' Zech. XI, 13. Thus the thirty righteous are always to be found in the house of the Lord, sc. Palestine.');"><sup>28</sup></span> I know that thirty [righteous men] are in the land of Israel and fifteen here. Said Abaye: Most of them are to be found in the synagogue under the side chamber.<span class="x" onmousemove="('comment',' I.e., most of the righteous men in Palestine. The reference is unknown.');"><sup>29</sup></span> And I said to them: If ye think good, give me my hire; and if not, forbear. So they weighed out for my hire thirty pieces of silver.<span class="x" onmousemove="('comment',' Ibid. 12.');"><sup>30</sup></span> Said Rab Judah: These are the thirty righteous men among the nations of the world<span class="x" onmousemove="('comment',' [MS.M. omits 'among the nations of the world'.]');"><sup>31</sup></span> by whose virtue the nations of the world continue to exist. Ulla said: These are the thirty commandments<span class="x" onmousemove="('comment',' [These are comprised in the seven Noahide precepts. For reference v. Ronsberg Glosses.]');"><sup>32</sup></span> which the sons of Noah took upon themselves but they observe three of them, namely,