The father is said to be the Garhapatya fire; the mother, the Dakshina fire; and the preceptor is the fire upon which libations are poured. These three fires are, of course, the greatest. If you adore carefully these three fires, you will conquer the three worlds.
पिता वै गार्हपत्योऽग्निर्दक्षिणः स्मृतः। गुरुराहवनीयस्तु साग्नित्रेता गरीयसी॥ त्रिष्वप्रमाद्यन्नेतेषु त्रील्लोकांश्च विजेष्यसि।