finance requirements- using stocks to prove income

[abdulraheem123]

can anyone help with my query?

in the finance guideline it says

"6.3. Dividends and other investment income – further guidance

6.3.1. If income has been earned from investments, shares and/or stocks in the 12 months prior to
the date of application and the relevant asset was then sold, we will consider it to be held at
the date of application and that income may be counted towards the financial requirement,
provided that investments, shares and/or stocks of an equivalent volume have since been
purchased in the same company and are held at the date of application. "

my question is:

i don't know what there mean by saying "income has been earned from shares"?
does it mean that i have to show that i withdrew the profits from the shares and i used it as my income?
or is it enough that i show the shares certificate showing how much i have invested in stocks and shares?