Rashi on Numbers 14:22/רש"י על במדבר י״ד:כ״ב

1וינסו— Take the passage as what it literally implies: AND THEY HAVE TESTED [ME].

2זה עשר פעמים TEN TIMES — twice at the Red Sea, twice in the case of the “Manna”, twice in the case of the “quails” etc., as is to be found in the Treatise Arakhin 15a.