Our house was bought in my mother-in-law's name. Can it be claimed as jointly acquired property?

It is harder but not necessarily impossible; it all depends on evidence of who really paid for and owns the house. The name on the title is strong evidence, so you need to show that you and your husband paid the price or the instalments. Gather bank statements, receipts for instalment payments, messages about the family arrangement, and witnesses who know of the arrangement. Cases involving a third party usually need legal advice, so speak to a syarie lawyer as early as possible. Avoid arguing directly with your mother-in-law; this matter is better taken through official channels. Read more on the matrimonial property (harta sepencarian) page.