Responsa for Exodus 4:26

וַיִּ֖רֶף מִמֶּ֑נּוּ אָ֚ז אָֽמְרָ֔ה חֲתַ֥ן דָּמִ֖ים לַמּוּלֹֽת׃ (פ)

So He let him alone. Then she said: ‘A bridegroom of blood in regard of the circumcision.’