[2002] A phenomenon (dhamma) with a future object (anāgatārammaṇa) is a condition for a phenomenon with a past object (atītārammaṇa) by decisive-support condition (upanissaya-paccaya): object decisive-support (ārammaṇūpanissaya), proximity decisive-support (anantarūpanissaya), natural decisive-support (pakatūpanissaya). Natural decisive-support: contemplation of impermanence (aniccānupassanā), contemplation of suffering (dukkhānupassanā), contemplation of non-self (anattānupassanā) with a future object are a condition for contemplation of impermanence, contemplation of suffering, contemplation of non-self with a past object by decisive-support condition.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.