It is possible but requires patience, commitment, and deep knowledge of the market. Possible methods include:

1. Free Cloud Mining:

Some platforms offer free mining services, but the returns are often small and take a long time.

You need to make sure that the platform is reliable and operates in accordance with Sharia (no interest or illegal practices).

2. Rewards and Airdrops Programs:

Some new currencies and networks distribute free rewards (tokens) for doing simple tasks like registering or interacting with the project.

It is important to ensure that the currency and the terms of its acquisition are Sharia-compliant.

3. Create content about cryptocurrencies:

You can create educational or analytical content about cryptocurrencies on social media or platforms like YouTube.

If you have enough knowledge of the market, you can generate income from advertising and sponsorships.

4. Work as a freelancer in exchange for digital currencies:

There are sites that offer freelance work opportunities in exchange for payment in digital currencies.

Make sure that the service you provide and the website are Sharia compliant.

Basic tips:

Avoid trading with leverage: because it involves usurious interest.

Be sure to learn: Cryptocurrencies are a fast-changing market.

Check the sources: Always make sure that the project or business is compatible with Islamic values.

If you are patient and willing to invest your time and knowledge, an increasing income can be generated over time.