Prajapati Daksa begot one thousand more sons, known as the Savalasvas, in the womb of his wife Pancajani

Expressions researched:
"begot one thousand more sons" |"one thousand more children"

SB Canto 6

Prajāpati Dakṣa, who was very sad at the loss of his sons, begot one thousand more sons in the womb of his wife, Pāñcajanī, and ordered them to increase progeny.

SB 6.5 Summary:

Prajāpati Dakṣa, who was very sad at the loss of his sons, begot one thousand more sons in the womb of his wife, Pāñcajanī, and ordered them to increase progeny. These sons, who were named the Savalāśvas, also engaged in worshiping Lord Viṣṇu to beget children, but Nārada Muni convinced them to become mendicants and not beget children. Foiled twice in his attempts to increase population, Prajāpati Dakṣa became most angry at Nārada Muni and cursed him, saying that in the future he would not be able to stay anywhere. Since Nārada Muni, being fully qualified, was fixed in tolerance, he accepted Dakṣa's curse.

First Dakṣa begot ten thousand children in the womb of his wife, and when the children were lost—when they returned home, back to Godhead—he begot another set of children, known as the Savalāśvas.

SB 6.5.24, Translation and Purport:

When Prajāpati Dakṣa was lamenting for his lost children, Lord Brahmā pacified him with instructions, and thereafter Dakṣa begot one thousand more children in the womb of his wife, Pāñcajanī. This time his sons were known as the Savalāśvas.

Prajāpati Dakṣa was so named because he was very expert in begetting children. (The word dakṣa means "expert.") First he begot ten thousand children in the womb of his wife, and when the children were lost—when they returned home, back to Godhead—he begot another set of children, known as the Savalāśvas. Prajāpati Dakṣa is very expert in begetting children, and Nārada Muni is very expert in delivering all the conditioned souls back home, back to Godhead. Therefore the materialistic experts do not agree with the spiritual expert Nārada Muni. but this does not mean that Nārada Muni will give up his engagement of chanting the Hare Kṛṣṇa mantra.