Buying a house with money from father

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I am looking at buying a house. The house will be partly funded by myself and my father (50/50). The house will be registered to myself and my father will be living in it. He has a house that he will sell and also some savings. I have saving so the house will be bought outright with no mortgage. My father had a stroke in 2022. My question is suppose that he had another; or for some reason needed to go in a care home; how would this affect the money he put into the property? Would it be the case that the house would need to be sold to reclaim his share of the money to pay his care bills? Or is the property outright mine.