He is only required to have the funds and prove the source, In this case, it is from a gift deed and if it is adequate for this family size, that settles it. POF does not only have to be from salary therefore there's no need to correlate to his place of work. If POF was raised from sale of stock, real estate, jewelry etc like in my case, salary does not needed to be proved. For clarity, I did not provide any salary statement, pay stub etc only a copy of my employment letter, reference and copy of fixed deposit certificate where I fixed the funds and here I am guiding others since. All he needs to do is provide evidence of employment as required for Express Entry and any form of POF for his family size with evidence of source jus in case which in his case is his gift deed (he can add the parents account statement to show where the funds came from which is acceptable). It's as simple as that