ततो जनेऽग्निं प्रविशत्यात्मना यो हुताशनम् ।आर्यतामार्यसंसर्गादागतः प्रविवेश ह
In plain words
'Then, when the people there entered the fire, he too — having come, through his association with the āryas, to a nobility of his own — entered the flames of his own accord.'