Maaliki fiQh ⁽⁴⁾

There is a difference of opinion among the Mālikiyyah. A group holds the view that qiyās is given precedence over the khabar al-wāhid. The other group says the khabar al-wāhid will be given precedence over qiyās.  

The Madhhab of Mālik is to give precedence to the zāhir of the Qur'ān over the khabar al-wāhid.   Reference(s): Rulings of fiqh in which the Māliki opposed the authentic hadīth and answers regarding it. Page 44

Abu Marthad al-Ghanawi reported Allah's Messenger (sallallaahu alayhi wa sallam) as saying: Do not sit on the graves and do not pray facing towards them. [Sahih Muslim]     Maalik made ta'wiil of this hadith and said that sitting is only forbidden if one does…

Your prayer became faasid or baatil. You have to repeat the prayer. You will pronounce the 'iQaamah before you repeat it. This is the view of the Maaliki school of thought.    Reference(s): Kuwaiti Encyclopedia of fiQh