Gen 11:12-15

12When Arpachshad had lived thirty-five years, he became the father of Shelah;13and Arpachshad lived after the birth of Shelah four hundred three years, and had other sons and daughters.14When Shelah had lived thirty years, he became the father of Eber;15and Shelah lived after the birth of Eber four hundred three years, and had other sons and daughters.