If he prayed without facing towards the qiblah because he forgot, does he have to repeat it?

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Check below answers in case you are looking for other related questions:
How did the Sahaabah turn around during their prayer when news reached them that the qiblah had been changed?
Not praying when one feels drowsy

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Related Answers:
She works as a nurse on the maternity ward and she has some questions about purification and prayer
He prayed then he heard the muezzin – should he repeat the prayer?
If a woman makes a mistake about when she becomes pure following menstruation, is she sinning?
How did the Sahaabah turn around during their prayer when news reached them that the qiblah had been changed?
Not praying when one feels drowsy

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