Reference for Bava Metzia 118:2
אמר להם אם הלכה כמותי חרוב זה יוכיח נעקר חרוב ממקומו מאה אמה ואמרי לה ארבע מאות אמה אמרו לו אין מביאין ראיה מן החרוב חזר ואמר להם אם הלכה כמותי אמת המים יוכיחו חזרו אמת המים לאחוריהם אמרו לו אין מביאין ראיה מאמת המים
as a snake, and proved it unclean. It has been taught: On that day R. Eliezer brought forward every imaginable argument,<span class="x" onmousemove="('comment',' Lit., 'all the arguments in the world'. ');"><sup>3</sup></span> but they did not accept them. Said he to them: 'If the <i>halachah</i> agrees with me, let this carob-tree prove it!' Thereupon the carob-tree was torn a hundred cubits out of its place — others affirm, four hundred cubits. 'No proof can be brought from a carob-tree,' they retorted. Again he said to them: 'If the <i>halachah</i> agrees with me, let the stream of water prove it!' Whereupon the stream of water flowed backwards — 'No proof can be brought from a stream of water,' they rejoined. Again he urged: 'If the <i>halachah</i> agrees with me, let the walls of the schoolhouse prove it,' whereupon the walls inclined to fall. But R. Joshua rebuked them, saying: 'When scholars are engaged in a halachic dispute, what have ye to interfere?' Hence they did not fall, in honour of R. Joshua, nor did they resume the upright, in honour of R. Eliezer; and they are still standing thus inclined. Again he said to them: 'If the <i>halachah</i> agrees with me, let it be proved from Heaven!' Whereupon a Heavenly Voice cried out: 'Why do ye dispute with R. Eliezer, seeing that in all matters the <i>halachah</i> agrees with him!' But R. Joshua arose and exclaimed: 'It is not in heaven.'<span class="x" onmousemove="('comment',' Deut. XXX, 12. ');"><sup>4</sup></span>