Wrong material

Hi,
we purchased some sheets. for supplier, but some material was rejected ....
can we bill him back rejected material.

we are supplier of air vantilation product's most of our HSN code belongs to vantilation product's

but rejected material was belong to another HSN code i.e iron sheet ..

is it legally right to bill him rejected material back...
if not
please share any section or notification

your prompt response will be appreciated in advance ...

Thank you