He died without doing Hajj and someone did Hajj on his behalf with funds from his estate before it was found out that he had an heir

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Check below answers in case you are looking for other related questions:
Is it permissible for him to go for ‘umrah when there is an unsettled dispute between him and his friend?
Ibraaheem’s proclamation of Hajj

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Related Answers:
He is going to form the intention to do a second ‘umrah when he is in Jeddah; where should he enter ihram from?
Greeting the Sacred Mosque
He is travelling from Riyadh to his family in the south, then he will enter ihram from their miqaat
Is it permissible for him to go for ‘umrah when there is an unsettled dispute between him and his friend?
Ibraaheem’s proclamation of Hajj

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