Anchor for muslim market

I live in a moslem majority country, Indonesia.

As a customer, they (ofcourse not all of them) would reluctant to use any product that connected to interest that came from lending-borrowing.

Anchor is very interesting but 1 of 2 sources of anchor high yield is interest from borrowers (prohibited in moslem practice)

The other sources for anchor yield come from POS reward.

My question is,

How they managed to provide stable interest from POS reward while POS network coin is expose to volatility?

Any answer or reference to enlighten me on this question is appreciated.

If its possible, im thinking on build the saving protocol for them that include other utilities like paying for games, bills, commerce etc. Using IDT (indonesia rupiah terra).