Is using cash-backs permitted in Islam?

Assalamualaykum brother. In this cashless era, many start-ups offer promotions like cash back for its customer. Is this considered halal? I personally use this cash back quite often, but I don’t know what Islam says about this kind of thing. Jazakallah khairan for your answer

Alaikumassalam wa rahmatullah,

There is no issue with cash-backs since they are (at least they are supposed to be) part of the profits that the company gives back to the customer in order to increase transactions.