[633] Thus have I heard. On one occasion the Blessed One was dwelling at Sāvatthī, in Jeta's Grove, Anāthapiṇḍika's Park. Then the Venerable Ānanda approached the Blessed One; having approached and paid homage to the Blessed One, he sat down at one side. Seated at one side, the Venerable Ānanda said this to the Blessed One: "Venerable sir, it is said, 'Empty (suñña) is the world, empty is the world.' In what way, venerable sir, is it said, 'Empty is the world'?"
"Because, Ānanda, it is empty of self (attā) and of what belongs to self (attaniya), therefore it is said, 'Empty is the world.' And what, Ānanda, is empty of self and of what belongs to self? The eye, Ānanda, is empty of self and of what belongs to self; forms are empty of self and of what belongs to self; eye-consciousness (cakkhuviññāṇa) is empty of self and of what belongs to self; eye-contact (cakkhusamphassa) is empty of self and of what belongs to self; and whatever feeling (vedanā) arises with eye-contact as condition—whether pleasant, painful, or neither-painful-nor-pleasant—that too is empty of self and of what belongs to self. The ear is empty … sounds are empty; the nose is empty; odours are empty; the tongue is empty; tastes are empty; the body is empty; tangibles are empty; the mind is empty of self and of what belongs to self; mental phenomena (dhammā) are empty of self and of what belongs to self; mind-consciousness (manoviññāṇa) is empty of self and of what belongs to self; mind-contact (manosamphassa) is empty of self and of what belongs to self; and whatever feeling arises with mind-contact as condition—whether pleasant, painful, or neither-painful-nor-pleasant—that too is empty of self and of what belongs to self. Because, Ānanda, it is empty of self and of what belongs to self, therefore it is said, 'Empty is the world.'"
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.