When he was praying Zuhr, he remembered that he had not prayed Fajr

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If he remembers a missed prayer during the current prayer or after finishing it
She thought that she was in nifaas following a miscarriage so she did not fast or pray

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Related Answers:
How can he make up for missed prayers?
They lived under Communist rule and did not know anything about praying and fasting; do they have to make it up?
Her nifaas (postpartum bleeding) continued for nine months and she did not pray during that time
If he remembers a missed prayer during the current prayer or after finishing it
She thought that she was in nifaas following a miscarriage so she did not fast or pray

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