The story
A rakṣā is a protection and bandhana a tie. The oldest telling is Indra's: his wife Śacī tied a thread on his wrist before his battle with the demon Bali, and he won. Draupadī tore a strip from her sari to bind Kṛṣṇa's bleeding finger, and he counted it a debt; when she was stripped at the dicing hall he made her sari endless.
History adds Rānī Karṇāvatī of Chittor sending a rakhi to the emperor Humāyūn for help against Gujarat, and Rabindranath Tagore having Hindus and Muslims tie rakhis on one another against the partition of Bengal in 1905.
The same full moon is Nāraḷī Pūrṇimā on the Konkan coast, when fishermen offer a coconut to the sea before the boats go out again, and Avaṇi Aviṭṭam in the south, when the sacred thread is renewed.
