Srimad-Bhagavatam: Canto 4 - Chapter 1 - Verse 11

Sanskrit:

भयनाम्नोऽग्रजो भ्राता प्रज्वार: प्रत्युपस्थित: ।ददाह तां पुरीं कृत्‍स्‍नां भ्रातु: प्रियचिकीर्षया ॥ ११ ॥

ITRANS:

bhaya-nāmno ’grajo bhrātāprajvāraḥ pratyupasthitaḥdadāha tāṁ purīṁ kṛtsnāṁbhrātuḥ priya-cikīrṣayā

Translation:

Under the circumstances, the elder brother of Yavana-rāja, known as Prajvāra, set fire to the city to please his younger brother, whose other name is fear itself.

Purport:

According to the Vedic system, a dead body is set on fire, but before death there is another fire, or fever, which is called prajvāra, or viṣṇu-jvāra. Medical science verifies that when one’s temperature is raised to 107 degrees, a man immediately dies. This prajvāra, or high fever, at the last stage of life places the living entity in the midst of a blazing fire.