Reply To: Article :What are Rūpa? – Dhammā are Rūpā too!

An arupa Brahma has a hadaya vatthu made of a suddhāṭṭhaka.

• Arupa loka means there are no other rupa made of suddhāṭṭhaka.
• However, ANY living entity has to have a “hadaya vatthu,” which is the  “seat of the mind.”

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Jittananto