Mahagovindasutta 8.4

8.4

Evaṃ nibbānagāminiyā paṭipadāya paññāpetāraṃ imināpaṅgena samannāgataṃ satthāraṃ neva atītaṃse samanupassāma, na panetarahi, aññatra tena bhagavatā.

I don’t see any Teacher, past or present, who so clearly describes the practice that leads to extinguishment for his disciples, apart from the Buddha.