saudi police clearance not being ask yet

[naning]

  hi everyone,

                 i am new here, hoping that someone could help us regarding my husband's police clearance and  our case is that we already had our medical done just this 12th of February here in the Philippines and so with my husband done in Manitoba. he's just wondering when the immigration will ask for his police clearance to submit, now he already requested for his police clearance in advance a few months ago for he knows that eventually they will going to ask him that too, my question is, is it okay if he submit it now in advance cause we are worrying it might expire soon before they will going to ask for it, how long is the duration of police clearance before it will expired by the way? wondering too if they will ask for it or not anymore?
                  please please... need your advices, what to do now... cause it's too hard to request for another police clearance if my husband police clearance will just expire. please help. thanks in advance and God Bless everyone!