By Ritambhara
The Mundaka Upanishad belongs to the Atharvaveda, and Shankara wrote a full commentary on it. Its third section opens with the Mundaka Upanishad two birds verse, which repeats word for word a stanza of the Rigveda, hymn 1.164.20.
dvā suparṇā sayujā sakhāyā samānaṃ vṛkṣaṃ pariṣasvajāte
tayor anyaḥ pippalaṃ svādv atty anaśnann anyo abhicākaśīti
“Two birds, inseparable friends, cling to the same tree. One of them eats the sweet fruit, the other looks on without eating.” (Mundaka Upanishad 3.1.1, tr. Max Müller)
What the verse claims
The verse places two selves on one tree. Suparṇā means “of fine wing”, and Shankara notes that the word stands for birds in general. Sayujā means yoked together, and sakhāyā means companions. Pippala is the fruit, svādu means sweet and atti means eats. Anaśnan, “the one who does not eat”, names the second bird, which only watches. In Shankara’s reading the eating bird is the individual self, bound by ignorance, desire and karma. The watching bird is Ishvara, the witness who directs both eater and eaten by presence alone.
The tree and the grief in Shankara’s commentary
Shankara says the tree is the body, because both can be cut down. He also calls it the kṣetra, the field in which the actions of all living beings ripen into fruit. Those fruits are the results of karma, tasted as pleasure and pain. The next verse, 3.1.2, completes the teaching. The self on that tree sinks “like a bottle-gourd in the waters of the sea”, in Shankara’s image, and grieves from helplessness. Its grief passes only when it sees the other bird and knows that bird’s glory as its own.
The verse and the world’s forests
Shankara’s tree is a field shared by every creature that feeds on it, and real forests carry the same load. In 2025 the tropics lost 4.3 million hectares of primary rainforest, according to Global Forest Watch data from the University of Maryland and the World Resources Institute (2026). That loss was 36 per cent below the 2024 record. It was still 46 per cent above the level of a decade earlier, and the felling of old forest goes on every year.
The Mundaka Upanishad ties grief to the bird that keeps eating and ties freedom to the bird that sees. Its instruction is to stand with the witness and know the eater and the tree as parts of one Self. A reader who accepts that teaching takes from the shared tree with restraint and shares its fruit with every other creature that depends on it.
