The predominating deity of fire begot in his wife, Svāhā, three children, named Pāvaka, Pavamāna and Śuci, who exist by eating the oblations offered to the fire of sacrifice.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
स्वाहाभिमानिनश्चाग्नेरात्मजांस्त्रीनजीजनत् । पावकं पवमानं च शुचिं च हुतभोजनम्
svāhābhimāninaścāgnerātmajāṃstrīnajījanat | pāvakaṃ pavamānaṃ ca śuciṃ ca hutabhojanam
SB 4.1.60