Is it safe to buy a land from one of the sons of deceased father

A person is offering to sell a piece of land (coming under urban co-op housing society) from one of the multiple properties/lands (different titles and khata number) owned by his father but now deceased since past 3 years. On bhulekh records, the title of the property is still on father's name (sole owner). The father left 3 sons and 2 daughters behind. No property distribution and partition has been done among sons and daughters. The seller is a sunni muslim and his father was also a sunni muslim. There is no will document. The father acquired (inheritance) the property from his father (also deceased). Can I buy this property? in case I buy, can this lead to problems later if other sons and daughters object to it. What would be the right procedure to buy the property (land) in this case. How the share for each son/daughter is decided in case of multiple properties /lands (is each piece of land is divided equally or they can do it lumpsum)