Atyantaparokṣa

atyantaparokṣa (T. ཤིན་ཏུ་ལྐོག་གྱུར་) is translated as "extremely hidden phenomena," "extremely obscure phenomena," etc. Extremely hidden phenomena are things that can be known only to a buddha (e.g., the particular effects of karma).

For an ordinary person, this type of phenomena that can only be established through recourse to scriptural quotation.

This is one of two types of hidden phenomena (parokṣa), the other being "slightly hidden phenomena" (kiṃcidparokṣa).