He did not pray in congregation because he was afraid that it would delay healing of his feet

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Check below answers in case you are looking for other related questions:
How should the sick person purify himself and pray?
Purification and prayer for one who suffers from haemorrhoids

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Related Answers:
How can a person who is partially paralyzed do wudoo’ and pray?
Prayer of one who becomes unconscious and one who is sick and stops praying
Ruling on prayer in congregation for one who is sick and one who cannot control najaasah (impurity)
How should the sick person purify himself and pray?
Purification and prayer for one who suffers from haemorrhoids

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