Mahanidanasutta 1.5

1.5

Yāva gambhīro cāyaṃ, bhante, paṭiccasamuppādo gambhīrāvabhāso ca, atha ca pana me uttānakuttānako viya khāyatī”ti.

in that this dependent origination is deep and appears deep, yet to me it seems as plain as can be.”