If he misses the first prayer in congregation in the mosque, should he pray with his family or should he come to the mosque for the second prayer in congregation?

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Check below answers in case you are looking for other related questions:
Ruling on praying in congregation at home and the reward for that as compared with the reward for praying in congregation in the mosque
Salaried imam receiving a portion of zakaat collected

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Related Answers:
The evidence that it is obligatory to offer prayers in congregation in the mosque
Attending prayers in congregation in a mosque where women are uncovered when doing wudoo’
Ruling on women praying in the mosque when they cannot see the imam or the men praying behind him
Ruling on praying in congregation at home and the reward for that as compared with the reward for praying in congregation in the mosque
Salaried imam receiving a portion of zakaat collected

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