Agni Is each the sacred hearth plus the deity of that fireplace who transmits oblations to the opposite deities. As a result, this mantra is recited whilst invoking the deity Agni in the shape of hearth as witness on the vow. Agne vratapate vrataṃ cariṣyāmi (Vājasaneyī-Saṃhitā with the Śukla [White] https://www.instagram.com/tantramantraaurvigyaan/