Reference for Yevamot 142:18
אמר רבינא ואיתימא רב ירמיה בר אבא אמר רב בשר החופה את רוב גובהה של עטרה
was not given to Abraham; for it is said, At that time the Lord said unto Joshua: 'Make thee knives of flint etc.'<span class="x" onmousemove="('comment',' And circumcise again (Josh. V. 2). Since a second circumcision was necessary (emphasis on 'again') it is assumed that the previous circumcisions performed in accordance with the law given to Abraham, without uncovering the corona, were made invalid in the days of Joshua. ');"><sup>29</sup></span> But is it not possible [that this applied to] those who were not previously circumcised; for it is written, For all the people that came out were circumcised,<span class="x" onmousemove="('comment',' In the wilderness … had not been circumcised, Josh. V, 5. ');"><sup>30</sup></span>