Kommentar zu Bereschit 30:43

צאן רבות MANY SHEEP — sheep that multiplied and were fruitful more than other sheep (Genesis Rabbah 73:11).

ויפרץ האיש, he surpassed all the boundaries of what is considered possible in amassing a tremendous fortune in a short time all through shepherding flocks of sheep and goats.

ויפרץ, this refers to financial success, not to the number of offspring. This is also what G’d had promised Yaakov in 28,14 when He said: ופרצת ימה וקדמה וגו'. Yaakov’s wealth is symbolically described as bursting through its fences. There is not enough space to accommodate it. Clearly, this is one of the instances in which the Torah deliberately indulges in exaggeration in order to illustrate its point.