Formula and steps for performing Mut'a marriage

Both man and woman who want to enter in Mut'ah marriage need to agree between them the period of the contract and the Mahr (Dowry) which is the right of the woman. She starts telling him: ZAWWAJTOKA NAFSIV'ALAL MAHR AL-MA'LOOMAH LILMUDDATIL MA'LOOMAH زوَّجتُكَ نفسي على المهر المعلوم للمدّةآلمعلومة He replies her immediately: QABILTU AL-TAZWEEJ LINAFSI 'ALAMAHR AL-M'A'LOOM LIL MUDDATIL MA'LOOMAH. 'Wassalam.