Ibn Ezra on Isaiah
בסאסאה. In measure. According to most commentators בסאסאה is a reduplication of סאה measure, like 23Root: טול :ירק.23Root: טול :ירק.ירקרק green (Lev. 13:49); מטלטלך Will carry thee away (22:17).
Rashi on Isaiah
when they sent them out, it strove with it When Egypt sent Israel out, it strove with it, the seah of the measure with its seah.