Ābhūta-saṃplava & Loka-vibhāga
Dissolution Threshold and the Fourteen Abodes
स्वर्लोकं वै दिवं ह्येष पुराणे निश्चयो गतः / भूतस्याधिपतिश्चाग्निस्ततो भूतपतिः स्मृतः
svarlokaṃ vai divaṃ hyeṣa purāṇe niścayo gataḥ / bhūtasyādhipatiścāgnistato bhūtapatiḥ smṛtaḥ
In the Purana it is firmly concluded that Svarloka is indeed the heavenly realm. Agni is the lord of beings (bhūtas); therefore he is remembered as Bhūtapati.