1.31 Hetuduka, Ajjhattikaduka

Nahetuṃ ajjhattikaṃ dhammaṃ paṭicca nahetu ajjhattiko dhammo uppajjati hetupaccayā. (Sabbattha ekaṃ. Sabbattha vitthāro.)

Hetuṃ bāhiraṃ dhammaṃ paṭicca hetu bāhiro dhammo uppajjati hetupaccayā. (Sabbattha nava. Sabbattha vitthāro.)