This is a subtle point. Those vedanā that arise in an Arahant are a manifestation of “distorted saññā.”
- An Arahant does not experience a “pure mind” while living daily life. His/her physical body formed at birth, before attaining Arahanthood. The “distorted saññā” (note that it is not defiled, i.e., does not have rāga, dosa, or moha) arises in anyone born with a physical body.
- However, when Arahants are in “Arahant-phala samāpatti” (where they experience the pure mind realized at the Arahant-phala moment), they do not experience the “distorted saññā.” While in that samāpatti, they do not experience vedanā associated with the “distorted saññā.”
- See #7 and #8 of “Saññā Nidānā hi Papañca Saṅkhā – Immoral Thoughts Based on ‘Distorted Saññā’” for details.