Not sure if this is the appropriate place to ask this question, but what percentage of income is the maximum monthly payment that is allowed by banks when arranging a loan?

Furthermore, is it possible to have multiple loans while under this limit? For example, let's say if you're allowed a maximum of 33% of your monthly income as installment, so if my monthly income is RM3k, then my maximum allowed installment should be RM1k, right? If so, am I allowed to have two separate loans for installments of RM500 each?