I am on disability and my spouse is a foreigner living in the u.s on student visa. We want to get married. Are their income requirements

Yes there are income requirements. If you do not make the minimum level of income to sponsor your spouse then you can engage a joint financial sponsor who can. Your foreign born spouse's income can only be used if he is legally allowed to work in the US. As of February 24 of this year a brand new form also needs to be completed. This is the declaration of self sufficiency and requires very detailed information about income assets etc. Consider working with counsel. Counsel anywhere in the USA can represent you and some of us are charge a very affordable flat fee.