Surat al-Duha

Al-Ḍuḥā (Arabic: الضحى, "The Morning Hours", "Morning Bright", "The Early Hours") is the ninety-third chapter (surah) of the Qur'an, with 11 āyat or verses. Qur'an 93 takes its name from Arabic its opening word, al-ḍuḥā, "the morning".
The chapter begins with oaths.

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Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 2 years ago

His previous Salah is valid as far as he did not neglect learning his religious matters.

'Wassalam.

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Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answer updated 2 years ago

If you recite Sura Al-Dhuha in your Prayer, you must recite along with it Sura Al-Inshirah because these two Suras are considered as one Sura in the Prayer. You must recite Bismillah Arrahman Arraheem for every Sura of them.

Same rule is for reciting Sura Quraish and Sura Al-Feel after Sura Al-Hamd in the Prayer.

Wassalam.