Shiva Purana
औपासनाग्नौ कर्त्तव्यं स्वगृह्योक्तविधानतः ॥ आज्यभागान्तमाग्नेयं मखतन्त्रमतः परम् ॥ ६ ॥
Thereafter the rites of sacrifice concluding with the sharing of clarified butter shall be performed in the Aupāsana fire according to the rules of one’s Gṛhyasūtra.
english translation
aupAsanAgnau karttavyaM svagRhyoktavidhAnataH ॥ AjyabhAgAntamAgneyaM makhatantramataH param ॥ 6 ॥
hk transliteration by Sanscript