Purifying income from halal sources

Salaam.

I hope all is well. I have read the articles on purifying your wealth on the IFG website but I am still a bit confused. In regard to purification, how often should I do this? Say I have invested in Shariah-compliant stocks but I still have to purify 5% of my earnings, do I do this on a weekly basis? Or monthly, quarterly, annually? Also do I have to take out 5% from my savings account directly or can I calculate 5% of my earnings and donate via cash I have on hand?

JzkA

Wasalam

May Allah bless you

You can do the purification everytime you are paid the dividends or you sell shares.

And Allah knows best!

JzkA for answering, May Allah reward you.

Also does this specifically have to come from our brokerage account or can we pay this via other means via cash in hand for example?

I do not see any issues with paying from other sources.

And Allah knows best!