TIPITAKA Volume 42 : PALI ROMAN Abhidhamma Pitaka Vol 9 : Abhi. Pa.(3) Anulomadukapaṭṭhānaṃ purimaṃ Saṃsaṭṭhavāro

[268] Arūpiṃ dhammaṃ saṃsaṭṭho arūpī dhammo uppajjati hetupaccayā: arūpiṃ ekaṃ khandhaṃ saṃsaṭṭhā tayo khandhā dve khandhe ... Paṭisandhi.