阿彌陀經通贊疏 2.16

2.16

問：「彼土屬三界否？」答：「無欲故非欲界，地居故非色界，有形相故非無色界，內無穢種外感淨方，迴出四流水超三界，故非界繫也。」

Question: 'Does that land belong to the three realms or not?' Answer: 'Because there is no desire, it is not the desire realm; because it is inhabited on the ground, it is not the form realm; because there are physical forms and marks, it is not the formless realm. Internally free from defiled seeds, externally it responds as a pure realm; transcending the four currents, it surpasses the three realms. Therefore, it is not bound to the realms.'