tathā hi bahutvaikatvādisaṅkhyā na vastugatabhedābhedalakṣaṇā, dārāḥ sikatā varṣā ityādāvasatyapi vastuto bhede bahutvasaṅkhyā parivartate
For plural or singular number is not characterized by real multiplicity or unity of things, [as] in words like "dārāḥ" (wife), "sikatā" (sand), "varṣā" (rain), etc., the plural number is used even though there is no real multiplicity.