Brahmajalasutta 3.43

3.43.1

Tatra, bhikkhave, ye te samaṇabrāhmaṇā aparantakappikā aparantānudiṭṭhino aparantaṃ ārabbha anekavihitāni adhimuttipadāni abhivadanti catucattārīsāya vatthūhi, tadapi tesaṃ bhavataṃ samaṇabrāhmaṇānaṃ ajānataṃ apassataṃ vedayitaṃ taṇhāgatānaṃ paritassitavipphanditameva.

they speculate and theorize about the final end on these forty-four grounds …