Śrāddha-kalpa: Amarakantaka–Tīrtha-Māhātmya and Akṣaya Pitṛ-Tarpaṇa
श्राद्धानि चाग्निकार्यं च तत्र कुर्यात्सदा क्षयम् / यस्त्वग्निं प्रविशेत्तत्र नाकपृष्ठे स मोदते
śrāddhāni cāgnikāryaṃ ca tatra kuryātsadā kṣayam / yastvagniṃ praviśettatra nākapṛṣṭhe sa modate
There one should always perform Śrāddhas and rites of the sacred fire, yielding imperishable merit. Whoever enters the fire there rejoices upon the heights of heaven.