On selling party paid share, who owes remaining amount - original shareholder or new buyer?

Stocks
1

As an existing shareholder of a company, I own the rights issue share of the company.

The share is party paid. If I sell it at a premium now, who will have to pay the remaining amount of the share?

Is it me or the share buyer?

2

New buyer

3

When you sell the Partly Paid share, obligation for further payments is passed on to the buyer.