"Naked short selling, or naked shorting, is the practice of short-selling a tradable asset of any kind without first borrowing the security or ensuring that the security can be borrowed, as is conventionally done in a short sale. When the seller does not obtain the shares within the required time frame, the result is known as a "failure to deliver" . The transaction generally remains open until the shares are acquired by the seller, or the seller's broker settles the trade."

https://en.m.wikipedia.org/wiki/Naked_short_selling#

Please see the bold part. What am I missing here?