Reference for Shabbat 263:4
מיתיבי מניין לפיקוח נפש שדוחה את השבת רבי אלעזר בן עזריה אומר מה מילה שהיא אחת מאיבריו של אדם דוחה את השבת קל וחומר לפיקוח נפש שדוחה את השבת
Then let the Divine Law write it in connection with circumcision, and these [others] can come to be deduced thence? Because one can refute [the analogy]: as for circumcision, that is because thirteen covenants were made in connection therewith.<span class="x" onmousemove="('comment',' In the passage enjoining circumcision upon Abraham and his descendants (Gen. XVII) 'covenant' is mentioned thirteen times, which shows its great importance. ');"><sup>4</sup></span>
Explore reference for Shabbat 263:4. In-depth commentary and analysis from classical Jewish sources.