เหตุทุกเสกขัตติกะ
TIPITAKA Volume 44 : PALI ROMAN Abhidhamma Pitaka Vol 11 : Abhi. Pa.(5) Anulomadukattikapaṭṭhānaṃ Hetudukasekkhattikaṃ paṭiccavāro
[489] Hetuṃ sekkhaṃ dhammaṃ paṭicca hetu sekkho dhammo uppajjati hetupaccayā: tīṇi . nahetuṃ sekkhaṃ dhammaṃ paṭicca nahetu sekkho dhammo uppajjati hetupaccayā: tīṇi . hetuṃ sekkhañca nahetuṃ sekkhañca dhammaṃ paṭicca hetu sekkho dhammo uppajjati hetupaccayā: tīṇi.