You are making it somewhat difficult to answer the question because you aren't giving me all the pieces of the puzzle, but that's fine. I will certainly try.
If it is 5, meaning him, his spouse (even though she does her own taxes, etc. she still counts) and your two children, he has to make $35,512 per year. Multiply that by 5 and because he can only use 1/5 the value of an asset and that means he needs assets worth more than $177,560. So let's say he has a house worth $300,000 but he still owes $150,000 on it, he can use $150,000 of that to qualify, but he would still be short. He can combine income and assets. So let's say he needs to make $35,512 and his retirement income is $25,000 per year, he still needs $10,512. So he can use his spouse's income (she would have to fill out an I-864A) or he can use an asset or assets worth more than $10,512 x 5 ($52,560).
As far as his retirement income, that counts as long as it is not SSI nor TANF. Here is a link to a good article:
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