‘But how,’ some might say, ‘can we be sure that Nāgārjuna unmistakenly ascertained the scriptures?’ This can be gathered from the scriptures. As stated in the noble Descent Onto Langka:
In the south, in the land of Veta,
A mendicant renowned as Śrīmat,
Referred to by the name ‘Nāga’,
Crushing the views of existence and non-existence,
Will teach my vehicle in the world,
The unsurpassed Greater Vehicle,
And accomplishing the Joyous Ground,
He will venture to Sukhavatī.1
And from the noble Great Cloud Twelve Thousand Lines:
Ānanda. Four hundred years after I have passed into transcendence, this young Licchavi named Sarvasattva Priyadarśana2
will become a bhikṣu named Nāga and spread my teachings widely; and eventually, in the world realm called Pure Illumination (prasādābhā), he will become a tathāgata, arhat, true and complete buddha by the name Jñānākaraprabhā.3
Hence, he unmistakenly ascertained the scriptures.