Kahwin Mut'ah is Marriage? Abduls are Angry at CP.

Allah's Messenger (ﷺ)'s said, "If a man and a woman agree (to marry temporarily), their marriage should last for three nights, and if they like to continue, they can do so; and if they want to separate, they can do so." I do not know whether that was only for us or for all the people in general. Abu `Abdullah (Al-Bukhari) said: `Ali made it clear that the Prophet said, "The Mut'a marriage has been cancelled (made unlawful).
وَقَالَ ابْنُ أَبِي ذِئْبٍ حَدَّثَنِي إِيَاسُ بْنُ سَلَمَةَ بْنِ الأَكْوَعِ، عَنْ أَبِيهِ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم ‏ "‏ أَيُّمَا رَجُلٍ وَامْرَأَةٍ تَوَافَقَا فَعِشْرَةُ مَا بَيْنَهُمَا ثَلاَثُ لَيَالٍ فَإِنْ أَحَبَّا أَنْ يَتَزَايَدَا أَوْ يَتَتَارَكَا تَتَارَكَا ‏"‏‏.‏ فَمَا أَدْرِي أَشَىْءٌ كَانَ لَنَا خَاصَّةً أَمْ لِلنَّاسِ عَامَّةً‏.‏ قَالَ أَبُو عَبْدِ اللَّهِ وَبَيَّنَهُ عَلِيٌّ عَنِ النَّبِيِّ صلى الله عليه وسلم أَنَّهُ مَنْسُوخٌ‏.‏
Reference : Sahih al-Bukhari 5119

Ibn Uraij reported:

'Ati' reported that jibir b. Abdullah came to perform 'Umra, and we came to his abode, and the people asked him about different things, and then they made a mention of temporary marriage, whereupon he said: Yes, we had been benefiting ourselves by this temporary marriage during the lifetime of the Prophet (ﷺ) and during the time of Abu Bakr and 'Umar.
Reference : Sahih Muslim 1405 c

The Four Pillars Of Mut'a
Mut'a is considered a kind of 'rental' because in general a man's basic aim in this kind of marriage is the sexual enjoyment of a woman, and in return for his enjoyment the woman receives a certain amount of money or property.

In defining 'rental' the jurisprudents say: 'It is to gain possession of a benefit in exchange for a specified sum.'10 This definition applies equally to temporary marriage. In this connection a number of hadith have been recorded in which the word musta'jara is employed.11
https://www.al-islam.org/muta-temporary-marriage-islamic-law-sachiko-murata/four-pillars-muta