He did ghusl just to be clean, and he did not realize that he was junub. Should he repeat his ghusl?

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Check below answers in case you are looking for other related questions:
Is it essential when doing ghusl for janaabah to wash with soap?
Ghusl is a requirement for intercourse after menstruation

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Related Answers:
He did ghusl with the intention of doing it for Jumu‘ah and he forgot about doing it for janaabah; did it remove his impurity?
Is it necessary to wash all of the hair, even if it is braided and long, in the case of major impurity?
It is too difficult for her to do ghusl from janaabah so she does not pray, then she repents, then she does that again.
Is it essential when doing ghusl for janaabah to wash with soap?
Ghusl is a requirement for intercourse after menstruation

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