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.)
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