Need help understanding the BGV process in Infosys

I have 5 YOE. I interviewed Infosys for the React position, and I cleared technical and manager rounds on Saturday. Today, I discussed with HR my previous experiences, and one of my companies gave me my salary in cash. I don't have any bank statement for it if it affects my offer or my candidature. Please, if anyone, has information about it? T, please help me with this.