Banks create money, but also have to borrow it

From the article:

In this article, we will demonstrate that, on a macro level, the banking sector creates money by extending credit, but that does not mean each individual bank can create unlimited supplies of money. A bank actually has to look for financing when it wants to provide a loan. We refer to this as the “money creation paradox”. It simply isn’t true, as is sometimes concluded, that because a bank creates its own liabilities (deposits) when extending loans, it can therefore extend credit and create money without bounds.