He did ghusl then he realized that the water had not reached his foot

No File Exists
Check below answers in case you are looking for other related questions:
He did ghusl and prayed, then he realized that he had missed a part of his body and the water had not reached it
Does the presence of oil, ink or secretions of the eye affect tahaarah (purification)?

No File Exists
Related Answers:
Ruling on using nail polish, and does it have to be removed when doing wudoo’
One ghusl is sufficient with the intention of doing ghusl both for Jumu’ah and to remove janaabah
He prayed on his own and leading others when he was junub; what does he have to do?
He did ghusl and prayed, then he realized that he had missed a part of his body and the water had not reached it
Does the presence of oil, ink or secretions of the eye affect tahaarah (purification)?

Recommended answers for you:
Ruling on democracy and elections and participating in that system
Does anal intercourse cancel the marriage contract?
Ruling on a Muslim entering a church
What is ghusl required and when is it mustahabb?
Bid‘ah of Sha‘baan