Ākaṅkheyyasutta

Suttapiṭaka · Majjhimanikāya · Vol. 12 · Section 81

[81] Bhikkhus, if a bhikkhu should wish: "May I dwell having contacted with the body those peaceful liberations (vimokkha) which are formless, transcending forms," let him be one who fulfills the precepts … a cultivator of empty dwellings (suññāgāra).

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.