As of today, almost all Advaita VedAntins espousing three truths theory using below terms
- prAtibhAsika satya
- vyAvahArika satya (Relative truth)
- pAramArthika satya (Absolute reality)
Does any Adi Sankara's work talk about these three truths? If not, What is the earliest Advaita VedAntin's work found to use the three truth doctrines and using what Sanskrit terms?
Also, As a side note, Two truths doctrine (corresponds to so-called relative and absolute truth) is found in Buddhism - a reference before Adi Sanakara. In Nāgārjuna's Mūlamadhyamakakārikā the two truths doctrine is used to defend the identification of dependent origination (pratītyasamutpāda) with emptiness (śūnyatā):
The Buddha's teaching of the Dharma is based on two truths: a truth of worldly convention and an ultimate truth. Those who do not understand the distinction drawn between these two truths do not understand the Buddha's profound truth. Without a foundation in the conventional truth the significance of the ultimate cannot be taught. Without understanding the significance of the ultimate, liberation is not achieved