Are the narrations mentioned about Umar ibn al-Khaṭṭāb, may Allah be pleased with him, prohibiting Hajj al-Mutʿah (interrupted pilgrimage) and temporary marriage correct, or are they fabricated and forged?

Firstly: The hadith (definition) narrated by Al-Tabari from Imran ibn Sawadah concerning Umar's prohibition of Mut'ah of Hajj and Mut'ah of women is very weak, due to the presence of Isa ibn Yazid ibn Da'ab and Abd al-Rahman ibn Abi Zayd in its chain of transmission, both of whom were declared weak by the scholars.

Secondly: Umar's prohibition of Mut'ah of Hajj and Mut'ah of Nikah (definition) is established and mentioned in Sahih (definition) Muslim. As for Mut'ah of Hajj, Umar did not prohibit it as an absolute prohibition, but rather it was a matter of choosing what was better for his subjects, so that the Sacred House would be frequented throughout the year. This is indicated by Umar's statement, "I knew that the Prophet (peace be upon him) and his Companions had done it, but I disliked them staying with their wives in Al-Arak, then departing for Hajj with their heads dripping." As for Mut'ah of Nikah, Umar's prohibition of it aligns with the final ruling of Sharia (definition) that it is permanently forbidden, after it was permissible in the early days of Islam. Indeed, the Prophet (peace be upon him) forbade it on the day of Khaybar and on the day of the Conquest [of Makkah].

Thirdly: The disagreement between Ibn al-Zubayr and Ibn Abbas (may Allah be pleased with them) regarding Mut'ah of Hajj is correct, but Ibn al-Zubayr (may Allah be pleased with him) retracted his opinion after his mother Asma bint Abi Bakr (may Allah be pleased with her) informed him that the Prophet (peace be upon him) had permitted it.