Parashas Naso
מִזָּכָ֤ר עַד־נְקֵבָה֙ תְּשַׁלֵּ֔חוּ אֶל־מִח֥וּץ לַֽמַּחֲנֶ֖ה תְּשַׁלְּח֑וּם וְלֹ֤א יְטַמְּאוּ֙ אֶת־מַ֣חֲנֵיהֶ֔ם אֲשֶׁ֥ר אֲנִ֖י שֹׁכֵ֥ן בְּתוֹכָֽם׃
Remove male and female alike; put them outside the camp so that they do not defile the camp of those in whose midst I dwell.
Torah Temimah points to TT / multiple units (verified).
מזכר עד נקבה — דומיא דזכר ונקבה שנעשין אב הטומאה, יצא כלי חרס שאינו נעשה אב הטומאה.
English: “Male or female” — comparable to male and female who become a primary source of impurity; this excludes an earthenware vessel which does not become a primary source of impurity.
Custom
Chazal use the phrase to exclude objects that cannot become an av ha-tumah from certain sanctuary rules.