Let's set the context straight from the get go.
Passive income here refers to the following. I quote from here.
Passive income can be loosely defined as income that continues to be earned after some initial work, and that requires little-to-no daily effort to maintain. Examples of this could be rental income from an investment property, dividends from a business that you own, or even royalties from a book or a piece of music.
In this post, the passive income refers to the dividend from that shares(stocks) you buy. I quote from here.
A dividend is the distribution of some of a company's earnings to a class of its shareholders, as determined by the company's board of directors. Common shareholders of dividend-paying companies are typically eligible as long as they own the stock before the ex-dividend date. Dividends may be paid out as cash or in the form of additional stock. ...
