VaggaAnupubbābhisamayakathā

Abhidhammapiṭaka · Kathāvatthu · Vol. 37 · Section 651

[651] "Is penetration (abhisamaya) gradual?" "Yes." "Does one develop the path of arahantship (arahatta-magga) gradually?" "It should not be said thus." … "Does one develop the path of arahantship gradually?" "Yes." "Does one realize the fruition of arahantship (arahatta-phala) gradually?" "It should not be said thus." …

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.