Garudapurana 3.9.16

3.9.16

bruve dvyaṣṭasahasraṃ ca śṛṇu tārkṣya mama striyaḥ /
agniputrāstu yaddvyaṣṭasahasrañca mama striyaḥ /
ajānajasamā hyetā (te) nātra kāryā vicāraṇā //

I shall speak of the sixteen thousand; listen, O Tārkṣya, to the sons of Agni, / who are my sixteen thousand wives. / These are equal to the ājānaja gods; no doubt should be entertained here.