✅Answer: First, pay attention to the following hadith:

عَنْ زُرَارَةَ عَنْ أَبِي عَبْدِ اللَّهِ قَالَ: لَا تَكُونُ مُتْعَةٌ إِلَّا بِأَمْرَيْنِ أَجَلٍ مُسَمًّى وَ أَجْرٍ مُسَمًّى

📚 Al-Kafi, Vol. 5, p. 455

Translation: Imam Sadiq (peace be upon him) said: 'A temporary marriage (mut'ah) is not valid except with two things: a specified (and known) duration and a specified (and determined) compensation.'

✅Although temporary marriage has various rulings and conditions, the two things mentioned in the above narration are among the most important conditions for temporary marriage, without which it is not valid.

✅As for the manner of performing the temporary marriage formula and the quality of the offer and acceptance, please pay attention to the following selected narration:

✅عَنْ أَبَانِ بْنِ تَغْلِبَ قَالَ: قُلْتُ لِأَبِي عَبْدِ اللَّهِ كَيْفَ أَقُولُ لَهَا إِذَا خَلَوْتُ بِهَا قَالَ تَقُولُ :

«أَتَزَوَّجُكِ مُتْعَةً عَلَى كِتَابِ اللَّهِ وَ سُنَّةِ نَبِيِّهِ صلی الله علیه و آله لَا وَارِثَةً وَ لَا مَوْرُوثَةً كَذَا وَ كَذَا يَوْماً وَ إِنْ شِئْتَ كَذَا وَ كَذَا سَنَةً بِكَذَا وَ كَذَا دِرْهَماً»

وَ تُسَمِّي مِنَ الْأَجْرِ مَا تَرَاضَيْتُمَا عَلَيْهِ قَلِيلًا كَانَ أَمْ كَثِيراً فَإِذَا قَالَتْ نَعَمْ فَقَدْ رَضِيَتْ فَهِيَ امْرَأَتُكَ وَ أَنْتَ أَوْلَى النَّاسِ بِهَا قُلْتُ فَإِنِّي أَسْتَحْيِي أَنْ أَذْكُرَ شَرْطَ الْأَيَّامِ قَالَ هُوَ أَضَرُّ عَلَيْكَ قُلْتُ وَ كَيْفَ قَالَ إِنَّكَ إِنْ لَمْ تَشْتَرِطْ كَانَ تَزْوِيجَ مُقَامٍ وَ لَزِمَتْكَ النَّفَقَةُ فِي الْعِدَّةِ وَ كَانَتْ وَارِثَةً وَ لَمْ تَقْدِرْ عَلَى أَنْ تُطَلِّقَهَا إِلَّا طَلَاقَ السُّنَّةِ.

📚 Al-Kafi, Vol. 5, p. 455

Translation: Aban ibn Taghlib said: I said to Imam Sadiq (peace be upon him): 'What should I say when I am alone with her (the woman for the temporary marriage)?' He said: 'You say:

أَتَزَوَّجُكِ مُتْعَةً عَلَى كِتَابِ اللَّهِ وَ سُنَّةِ نَبِيِّهِ صلی الله علیه و آله لَا وَارِثَةً وَ لَا مَوْرُوثَةً كَذَا وَ كَذَا يَوْماً وَ إِنْ شِئْتَ كَذَا وَ كَذَا سَنَةً بِكَذَا وَ كَذَا دِرْهَماً

✅ (In place of the first 'so-and-so,' the number of days or years is specified, and in place of the second 'so-and-so,' the amount of dirhams or money or compensation, which is the dowry of the temporary marriage, is specified.)

'...and you name the compensation that you have agreed upon and both have consented to, whether it is little or much (it doesn't matter). So when the woman says: 'na'am' which means 'yes,' indeed she has consented and she is your wife and you are the most worthy person to her.' I said: 'I am embarrassed to mention the condition of the days!' The Imam said: 'The harm of this action is greater for you!' I said: 'How so?' He said: 'If you do not stipulate the number of days and its duration, the marriage becomes permanent, and giving maintenance during the waiting period becomes obligatory upon you, and that woman inherits from you, and you cannot divorce her except with a traditional divorce (i.e., like a permanent marriage divorce).'

✅Since the matter of marriage is very important, it is necessary that we try to learn all its conditions and then act upon it so that we do not fall into what is forbidden by Allah.

✅A point that is only briefly touched upon is that due diligence should be exercised in the selection of the case, and we should be cautious and avoid suspicion with regard to marrying women whom we know have been divorced in absentia and without observing the conditions, because:

شُعَيْبٍ الْحَدَّادِ قَالَ: قُلْتُ لِأَبِي عَبْدِ اللَّهِ رَجُلٌ مِنْ مَوَالِيكَ يُقْرِئُكَ السَّلَامَ وَ قَدْ أَرَادَ أَنْ يَتَزَوَّجَ امْرَأَةً وَ قَدْ وَافَقَتْهُ وَ أَعْجَبَهُ بَعْضُ شَأْنِهَا وَ قَدْ كَانَ لَهَا زَوْجٌ فَطَلَّقَهَا عَلَى غَيْرِ السُّنَّةِ وَ قَدْ كَرِهَ أَنْ يُقْدِمَ عَلَى تَزْوِيجِهَا حَتَّى يَسْتَأْمِرَكَ فَتَكُونَ أَنْتَ تَأْمُرُهُ فَقَالَ أَبُو عَبْدِ اللَّهِ هُوَ الْفَرْجُ وَ أَمْرُ الْفَرْجِ شَدِيدٌ وَ مِنْهُ يَكُونُ الْوَلَدُ وَ نَحْنُ نَحْتَاطُ فَلَا يَتَزَوَّجْهَا

📚 Al-Tahdhib, Vol. 7, p. 470

Translation: Shu'ayb Haddad said: 'I said to Imam Sadiq (peace be upon him): 'A man from your friends sends you greetings. Indeed, he intends to marry a woman, and that woman agrees with him and he likes one of her qualities, and this woman had a husband and her husband divorced her in a way that is not in accordance with the Sunnah, and he did not like to proceed with marrying this woman until he sought your instruction and you ordered him to do this. The Imam said: 'This is a private part (farj) and the matter of a private part is severe and a child is also created from this matter, and we are cautious, so he should not marry her.'

✅ A divorce that is against the Sunnah is a divorce that is performed without observing the obligatory and necessary conditions, a well-known example of which is divorcing a woman three times in one sitting, which was a custom among the common people.