I want to get the purchase receipt of my iphone , I do have serial number

Ankit2864 wrote:

I want to get the purchase receipt of my iphone , as I bought used iphone, so want to confirm the purchase

That's not going to happen. You bought a used phone. The only person who could possibly provide a copy of the original receipt to you would be the person who originally bought the phone.

Contact the place where you bought it to get a receipt. We can’t provide that for you. This is a user to user forum and Apple is not here.

Apple will not give you a copy of the receipt if you purchased it from someone, that would be a violation of privacy.