is my 3 years old son eligible to get SAR Passport what is the procedure and what type of document I need to present?

Dear Sir/Madam,
I am Gurung Ashok, Chinese nationality holding SAR Hongkong Passport HA 1523098.Since 2006 I have assigned from my company to work in Middle East as a Regional Operation Manager. Near future I am planning to bring my family to Middle east to continue stay with me.My son need passport to travel, who is just 3 years old and born in Nepal.If he is eligible to get SAR Passport what is the procedure and what type of document I need to present to you.
I would be very much appreciate for your advise. Next month I have plan to visit Nepal.

Thank you and best regards
Gurung Ashok, Doha.