Question

Why the thirteen upanishad are called principal upanishad?

Answer 1

Here is ur answer mate.Hope it helps mark it as brainliest please.Mukhya Upanishads, also known as Principal Upanishads, are the most ancient and widely studied Upanishads of Hinduism. Composed between 800 BCE to the start of common era, these texts are connected to the Vedic tradition.[1] While some early colonial era Indology listed 10 Upanishads as Mukhya Upanishads, most scholars now consider the Principal Upanishads to be thirteen.[2][3][4]

Īśā (IsUp), Yajurveda
Kena (KeUp), Samaveda
Kaṭha (KaUp), Yajurveda
Praṣna (PrUp), Atharvaveda
Muṇḍaka (MuUp), Atharvaveda
Māṇḍūkya (MaUp), Atharvaveda
Taittirīya (TaiUp), Yajurveda
Aitareya, (AiUp), Rigveda
Chāndogya (ChhUp), Samaveda
Bṛhadāraṇyaka (BṛUp), Yajurveda
Shvetashvatara Upanishad
Kaushitaki Upanishad
Maitri Upanishad
The first ten of the above Principal Upanishads were commented upon by the 8th[5] century scholar, Shankara. The adjective mukhya means "principal", "chief", or "primary". The Mukhya Upanishads are accepted as śruti by all Hindus, or the most important scriptures of Hinduism.[6]

The Principal Upanishads (1953) by Sarvepalli Radhakrishnan gives the text and English translation of a total of eighteen Upanishads, including the 13 listed by Hume (1921).