India’s second-richest man is building upon his Dubai property empire with another beach-side villa purchase, smashing his prior record for the city’s most expensive residential real estate deal within a matter of months, according to people familiar with the matter. Mukesh Ambani bought the Palm Jumeirah mansion last week for about $163 million from the family of Kuwaiti tycoon Mohammed Alshaya, said the people, asking not to be named as they’re not authorized to speak publicly.