The characterization of India as a spiritual place by most tourists is not wrong, considering that it is the birthplace of multiple religions including Hinduism, Buddhism and Sikhism. Religious institutions play an important role in daily life and receive a lot of money - including small bills - as donations. The Ministry of Finance has requested religious institutions to deposit their cash donations into banks, which can then redistribute these small bills into the economy.
In the southern state of Kerala, the Martin De Porres church has opened its collection box to help the needy. The church normally opens its donation box once every six months.

https://cointelegraph.com/news/indias-demonetization-cash-is-not-holy-cow-in-bitcoin-blockchain-we-trust