Thereafter, in order to resume the activities of sacrifice, the brāhmaṇas first arranged to purify the sacrificial arena of the contamination caused by the touch of Vīrabhadra and the other ghostly followers of Lord Śiva. Then they arranged to offer into the fire the oblations known as puroḍāśa.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
वैष्णवं यज्ञसन्तत्यै त्रिकपालं द्विजोत्तमाः । पुरोडाशं निरवपन् वीरसंसर्गशुद्धये
vaiṣṇavaṃ yajñasantatyai trikapālaṃ dvijottamāḥ | puroḍāśaṃ niravapan vīrasaṃsargaśuddhaye
SB 4.7.17