यदा लेलायते ह्यर्चिः समिद्धे हव्यवाहने । तदाऽऽज्यभागावन्तरेणाऽऽहुतीः प्रतिपादयेत् ॥ २॥

When the fire is well-lighted and the flames flicker, let a man offer his oblations in the space between the two portions of melted butter.