Does praying Tahiyyat al-Masjid mean that one does not have to pray Sunnat al-Fajr?

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Is it permissible to pray Witr with nine rak’ahs, two tashahhuds and one salaam?
Is there a Sunnah prayer before Jumua‘ah?

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Is it permissible to pray Witr with nine rak’ahs, two tashahhuds and one salaam?
Is there a Sunnah prayer before Jumua‘ah?

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