Genesis 32:15 thirty milk camels and their colts, forty cows, ten bulls, twenty female donkeys and ten foals. (WEB KJV JPS ASV DBY WBS NAS RSV)
Judges 10:4 He had thirty sons who rode on thirty donkey colts, and they had thirty cities, which are called Havvoth Jair to this day, which are in the land of Gilead. (WEB KJV JPS ASV WBS YLT)
Judges 12:14 He had forty sons and thirty sons' sons, who rode on seventy donkey colts: and he judged Israel eight years. (WEB KJV JPS ASV WBS YLT)