In hinduism, advaita propounds the doctrine of two truths - vyavahArika satya and paramArthika satya.
However, long before Shankara (8th - 9th century CE) , the foremost exponent of advaita, the mAdhyamika buddhist philosopher nAgArjuna (2nd - 3rd century CE) propounds the doctrine of two truths - samvRti satya and paramArtha satya.
Is there any explicit reference to any two truths doctrine in hindu/vedic/smriti/commentary/grammar sources before the time of nAgArjuna? I am looking for explicit references and not vague statements that can be interpreted in multiple ways.
I do not want to go into whether advaita's two truths are same or different from that of mAdhyamika buddhism. I just want to know if there is(are) any hindu source(s) before nAgArjuna, that talks of any sort of two truths - whatever those two truths may mean.
PS: Please dont quote some obscure "upanishads" (not quoted by Shankara or his contemporaries) or post-Shankaran advaitic sources. The sources that I am looking for, must be pre-nAgArjuna. Also, please dont quote statements from upanishads like - brahman has two aspects, x and y, satyam cha anrtam cha satyam abhavat, yatra hi dvaitam iva bhavati...., vacharambhanam vikaro namadheyam.... I am not looking for these kinds of statements. These statements can have multiple interpretations. Thank you for understanding.
EDIT: My question is not duplicate because my question is specific to scriptures which are pre-nAgArjuna. Also I am looking for explicit references to the two truths doctrine. Not some vague references which can be interpreted in multiple ways.