Thats all you need to show, Are you a PR of canada or a Citizen, If you are a PR remember you HAVE TO STAY IN CANADA thru out the process, You can visit your spouse for 1 - 2 months but staying outside canada more than 3 months and your application will be rejected. If you are a sponsor it won't matter but if you decide to reside in pakistan with your spouse, you have to show some kind of proof that after your spouse get their PR you both will go and live in Canada, The proof may include, A house you have rented or bought in Canada, Letter from Family (mother father) stating that you will reside in canada with them in the family home etc.