Buddha-carita, or Life of Buddha by Ven. Aśvaghoṣa

Buddha-carita, or Life of Buddha - 208
‘He who knows it thoroughly reaches at last to absolute
tenuity; and having become thus attenuated he becomes blissfully
extinct.
44. ‘When you have thus learned this, in order to be freed from the
bond of existence, you must cut down with all your efforts the root of
pain, ignorance.
45. ‘Then, being set free from the bonds of the prison-house of
existence, as Arhats, possessing natures perfectly pure, you shall attain
Nirvāṇa.’
46. Having heard this lesson preached by the chief of saints, all the
mendicants comprehended the course and the cessation of embodied
existence.
47. As these five ascetics listened to his words, their intellectual eye
was purified for the attainment of perfect wisdom:
48. The eye of dharma was purified in six hundred millions of gods,
and the eye of wisdom in eight hundred millions of Brahmans.
49. The eye of dharma was purified in eighty thousand men, and even
in all beings an ardour for the Law was made visible.
50. Everywhere all kinds of evil became tranquillised, and on every
side an ardour for all that helps on the good Law manifested itself.