Shiva Purana

siva.sh/siva-purana/saturda-samhita/29/19

तत्र त्वं गच्छ नभग तान् सुशंस महाकवे ।। सूक्ते द्वे वैश्वदेवे हि सत्रं शुद्धं हि तद्भवेत् ।। १९।।

sanskrit

O wise Nabhaga, you go there and praise them. Recite two Vaiśvadeva sūkatas there. That sacrifice will then become perfect.

english translation

tatra tvaM gaccha nabhaga tAn suzaMsa mahAkave || sUkte dve vaizvadeve hi satraM zuddhaM hi tadbhavet || 19||

hk transliteration by Sanscript