Reference for Sanhedrin 217:10
במתניתא תנא רעים בממונם וחטאים בגופן רעים בממונם דכתיב (דברים טו, ט) ורעה עינך באחיך האביון וחטאים בגופן דכתיב (בראשית לט, ט) וחטאתי לאלהים לה' זו ברכת השם מאד זו שפיכות דמים שנאמר (מלכים ב כא, טז) גם דם נקי שפך מנשה (בירושלים) הרבה מאד [וגו']
Our Rabbis taught: The men of Sodom waxed haughty only on account of the good which the Holy One, blessed be He, had lavished upon them. What is written concerning them? — As for the earth, out of it cometh bread: and under it it is burned up as it were with fire. The stones of it are the place of sapphires: and it hath dust of gold. There is a path which no fowl knoweth, and which the vulture's eye hath not seen: The lion's whelps have not trodden it, nor the fierce lions passed by it.<span class="x" onmousemove="('comment',' Job XXVIII, 5-8. ');"><sup>18</sup></span> They said: Since there cometh forth bread out of [our] earth, and it hath the dust of gold, why should we suffer wayfarers, who come to us only to deplete our wealth. Come, let us abolish<span class="x" onmousemove="('comment',' Lit., 'cause to be forgotten.' ');"><sup>19</sup></span>