Devibhagavatapurana 2.4.47

2.4.47

evaṃ gacchati kāle'tha nṛpatirmṛgayāṃ gataḥ |
nighnanmṛgagaṇānbāṇairmahiṣānsūkarānapi ||

Thus some time passed on, when, once on an occasion, the king S’antanu went out a hunting and killed, with arrows, buffaloes, boar, and other wild animals and came to the banks of the Ganges. Here he saw with great wonder that a boy was playing with a great bow and was shooting arrows after arrows. The king's attention was more attracted towards the boy, but whether that boy was his or not, did not at all come to his mind. Looking at his extraordinary feats, his agility in shooting arrows with ease and quickness, his learning that can have no equal and his beautiful form, as if of Cupid, he became greatly surprised and asked him:-- “O Sinless one! whose son are you?” The hero boy did not reply anything but went away shooting his arrows. The king thought within himself “Who is this boy? Whose son is he? What to do now? To whom shall I go now?” Thus pondering, he recollected within himself and began to recite verses in praise of Gangâ; Gangâ, assuming her beautiful form as before, became visible to the king. Seeing her, the king said:-- “O Gangâ! Who is this boy that has just gone? Will you show him once more to me now?” Hearing these words of S’antanu, Gangâ said:-- “O king of kings! He is your son, he is that eighth Vasu. So long I have nourished him and now I hand him over to you. O Suvrata! This is the great ascetic Gângeya. He is the illustrious scion of your family. The glory of your line will be enhanced. I have taught him the whole science of archery. This pure son of yours dwelt in the hermitage of Vas'istha and has become versed in all the Vidyâs and skilled in all the actions. Your this son knows everything that Jamadgni Paras'urâm knew. So, O king of kings! Take now your son and be happy. Thus saying, Gangâ gave him his son and vanished; the king also became very glad and embraced his son; he smelled his head and took him to his chariot and drove towards his own city. On returning to Hastinâpur, the king held a great festival (utsab) in honor of the arrival of his son; he called all his astrologers and enquired what day was auspicious. He then called all his subjects and ministers and installed Gângeya as the Crown Prince. The religious S’antanu became very happy on making Gângeya, the Crown Prince; he forgot the pains due to Gangâ's bereavement. Sûta said:-- “Thus I have described to you the cause of the curse on Vasus, the birth of Bhîsma from the womb of Gangâ, the union of Gangâ and S’antanu, etc., He who hears in this world this holy story of Gangâ's birth and the birth of the Vasu, is freed of all sins and gets mukti. O Munis! I have described these meritorious holy accounts, as I heard from the mouth of Vyâsa. Any body who hears this holy S’rîmad Bhâgavatam, endowed with five characteristics and filled with various anecdotes, that came out of the mouth of Vyâsa, finds all his sins destroyed and attains peace and blessedness. O Munis! Thus has been described completely to you this holy history.
Thus ends the fourth Chapter on the birth of the Vasus in the Mahâpurâna S’rîmad Devî Bhâgavatam of 18,000 verses.