Mahagovindasutta 12.2

12.2

Evaṃ tiṇṇavicikicchaṃ vigatakathaṅkathaṃ pariyositasaṅkappaṃ ajjhāsayaṃ ādibrahmacariyaṃ imināpaṅgena samannāgataṃ satthāraṃ neva atītaṃse samanupassāma, na panetarahi, aññatra tena bhagavatā’ti.

I don’t see any Teacher, past or present, who has achieved these things, apart from the Buddha.’