They summoned the goddess Yogamaya and experienced her transfer the fetus from the womb of Devaki on the womb of Rohini (Vasudeva's other spouse who lived along with her sister Yashoda across the river Yamuna, from the village of cowherds at Gokulam). Hence the kid conceived in one womb was https://blissdriveteam.github.io/SouthernCaliforniaSurrogacy/Becoming-A-Surrogate-In-Southern-California