And when one judgement is mentioned about several matters – the predicate will come in plural. And if it comes in singular, it teaches that they may be combined with one another.

As when they give a homiletical interpretation for אך מעין ובור יהיה טהור (Nevertheless a fountain or a cistern wherein is a gathering of water shall be clean)³⁹¹.

footnotes: ³⁹¹ Leviticus 11:36.

והיה בעור בשרו לנגע (and it become in the skin of his flesh the plague of leprosy)³⁹² – it teaches that all are combined together.

Leviticus 13:2 says,אדם כי יהיה בעור בשרו שאת או ספחת או בהרת והיה בעור בשרו לנגע צרעת והובא אל אהרן הכהן או אל אחד מבניו הכהנים(When a man shall have in the skin of his flesh a rising, or a scab, or a bright spot, and it become in the skin of his flesh the plague of leprosy, then he shall be brought to Aaron the priest, or to one of his sons the priests), using the singular verbוהיהfor “and it become”. This teaches that a rising, scab, and bright spot may be combined with one another for the purposes of negation of leprosy, confirmation, and quarantine³⁹³.

footnotes: ³⁹² Leviticus 13:2. ³⁹³ Malbim, HaTorah v’HaMitzvah Tazria 39.