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SB 4.1.63
agnisvatta barhisadah
saumyah pitara ajyapah
sagnayo ’nagnayas tesam
patni daksayani svadha
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The Agnisvattas, the Barhisadas, the Saumyas and the Ajyapas are the Pitas. They are either sagnika or niragnika. The wife of all these Pitas is Svadha, who is the daughter of King Daksa.