Ruling on the validity of Salah if the Imam goes into a state of minor ritual impurity during the last Tashahhud

Q 1: We seek a Fatwa (legal opinion issued by a qualified Muslim scholar) about some of the rulings of Salah, which we have come across while reading a book entitled "Kashf Al-Ghummah ‘An Jami‘ Al-Ummah", vol. 1 . Pp. 107-108. We would like to know whether these rulings are correct or not.The second part: The Prophet (peace be upon him) said: “If the person goes into a state of (minor) ritual impurity (i.e. Breaks wind) when he has sat at the end of his Salah, before Taslim (salutation of peace ending the Prayer), his Salah is valid.” In another narration: “If the Imam goes into a state of (minor) ritual impurity before the end of his Salah when he sits down firmly, his Salah and that of those behind him will be complete.”

A: The answer for the second part is that this Hadith is not authentically reported from the Prophet (peace be upon him). Al-Tirmidhy said in his book "Al-Jami‘ Al-Sahih" after relating this Hadith: “Its Isnad (chain of narrators) is not strong and there is uncertainty about its Isnad.”The correct view is that Salah can only be ended by Taslim (salutation of peace ending the Prayer) which is one of the pillars of Salah, based on the saying of the Prophet (peace be upon him): “The key to Salah is purification. Its Tahrim (forbiddance of any actions outside prayer) is (starts) with the Takbir (saying: ‘Allahu Akbar [Allah is the Greatest]’ upon commencing Prayer) and its Tahallul (ending of the praying state) is with the Taslim.” (Related by Ahmad, Al-Tirmidhy, Abu Dawud, and Ibn Majah) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.