Told by the chief priest “Now offer oblations,” the person in charge of oblations took clarified butter to offer. He then remembered the request of Manu’s wife and performed the sacrifice while chanting the word “vaṣaṭ.”
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
प्रेषितोऽध्वर्युणा होता ध्यायंस्तत्सुसमाहितः । हविषि व्यचरत्तेन वषट्कारं गृणन् द्विजः
preṣito'dhvaryuṇā hotā dhyāyaṃstatsusamāhitaḥ | haviṣi vyacarattena vaṣaṭkāraṃ gṛṇan dvijaḥ
SB 9.1.15