GST on Transfer of Business

Pankaji ji, Jow to move ahead if father has two sons in above case and Stock in Hand of Rs. 1 Cr.  need to be equally transferred among two sons. As option is there to give only 1 GSTN number for transfer of business.

One of my client is carrying Business of trading of Pepsi, Coca Cola, also registered under GST. Now he wants to close his business and wants to transfer the remaining stock to his wife as a gift. Now, his wife is not registered under GST, so the question is

1. What will be the GST implication of Stock transfer in such case?

2. Whether, the client have to pay GST on remaining stock?