✅ Answer: Please refer to the following narrations:

1⃣زید بن وهب الجهنی عن الحسن بن علی بن أبی طالب عن أبیه صلوات اللَّه علیهما قال: یَبْعَثُ اللَّهُ رَجُلًا فی آخِرِ الزَّمَانِ و کَلَبٍ مِنَ الدَّهْرِ و جَهْلٍ مِنَ النَّاسِ یُؤَیِّدُهُ اللَّهُ بِمَلَائِکَتِهِ و یَعْصِمُ أَنْصَارَهُ و یَنْصُرُهُ بِآیَاتِهِ و یُظْهِرُهُ عَلَی الْأَرْضِ حَتَّی یَدِینُوا طَوْعاً أَوْ کَرْهاً یَمْلَأُ الْأَرْضَ عَدْلًا و قِسْطاً و نُوراً و بُرْهَاناً یَدِینُ لَهُ عَرْضُ الْبِلَادِ و طُولُهَا لَا یَبْقَی کَافِرٌ إِلَّا آمَنَ و لَا طَالِحٌ إِلَّا صَلَحَ و تَصْطَلِحُ فی مُلْکِهِ السِّبَاعُ و تُخْرِجُ الْأَرْضُ نَبْتَهَا و تُنْزِلُ السَّمَاءُ بَرَکَتَهَا و تَظْهَرُ لَهُ الْکُنُوزُ یَمْلِکُ ما بَیْنَ الْخَافِقَیْنِ أَرْبَعِینَ عَاماً فَطُوبَی لِمَنْ أَدْرَکَ أَیَّامَهُ و سَمِعَ کَلَامَهُ

📚Al-Ihtijaj, p. 148

Amir al-Mu'minin (peace be upon him) said: Allah will send a man in the end times during days of hardship and ignorance, and He will support him with His angels, protect his followers, aid him with His signs, and make him victorious on earth until people, willingly or unwillingly, obey him. He will fill the earth with justice, light, and proof, and the lands far and wide will submit to him until no disbeliever remains but that they believe, and no wicked person remains but that they reform. In his kingdom, even wild animals will be at peace, the earth will bring forth its vegetation, the sky will shower its blessings, and treasures will be revealed to him. He will rule over the East and West for forty years! Blessed is the one who lives to see his time and hears his words!

2⃣عن أبی الجارود قال قال أبوجعفر علیه السلام: إِنَّ الْقَائِمَ یَمْلِکُ ثَلَاثَمِائَةٍ و تِسْعَ سِنِینَ کَمَا لَبِثَ أَهْلُ الْکَهْفِ فی کَهْفِهِمْ یَمْلَأُ الْأَرْضَ عَدْلًا و قِسْطاً کَما مُلِئَتْ ظُلْماً و جَوْراً و یَفْتَحُ اللَّهُ لَهُ شَرْقَ الْأَرْضِ و غَرْبَهَا و یَقْتَلُ النَّاسُ حَتَّی لَا یَبْقَی إِلَّا دِیْنُ مُحَمَّدٍ صلی الله علیه و آله یَسِیرُ بِسِیرَةِ سُلَیْمَانَ بْنِ دَاوُد.

📚Al-Ghaybah, by al-Tusi, p. 474

Imam Baqir (peace be upon him) said: Indeed, the Qa'im (peace be upon him) will rule for 309 years, the same duration as the stay of the Companions of the Cave in the cave. He will fill the earth with justice just as it has been filled with oppression and injustice, and Allah will open up the East and the West of the earth for him. He will act according to the conduct of Solomon, son of David!

3⃣عن عبدالکریم بن عمروالخثعمی قال: قُلْتُ لِأَبی عبداللَّه علیه السلام کَمْ یَمْلِکُ الْقَائِمُ قال سَبْعَ سِنِینَ یَکُونُ سَبْعِینَ سَنَةً مِنْ سِنِیکُمْ هَذِه

📚Al-Ghaybah, by al-Tusi, p. 474

Abd al-Karim ibn Amr said: I asked Imam Sadiq (peace be upon him): How long will the Qa'im (peace be upon him) reign? He replied: Seven years, which will be seventy years of your time!

4⃣عن ابن أبی یعفور قال قال أَبوعبداللَّه علیه السلام: مُلْکُ الْقَائِمِ مِنَّا تِسْعَ عَشْرَةَ سَنَةً و أَشْهُر

📚Al-Ghaybah, by al-Nu'mani, p. 180

Imam Sadiq (peace be upon him) said: The reign and kingdom of our Qa'im will last for nineteen years and some months!

5⃣عن جابر بن یزیدالجعفی قال سمعت أباجعفر محمدبن علی علیهماالسلام یقول: وَاللَّهِ لَیَمْلِکَنَّ رَجُلٌ مِنَّا أَهْلَ الْبَیْتِ ثَلَاثَمِائَةِ سَنَةٍ و یَزْدَادُ تِسْعاً قال فَقُلْتُ لَهُ مَتَی یَکُونُ ذَلِکَ قال بَعْدَ مَوْتِ الْقَائِمِ علیه السلام قُلْتُ لَهُ و کَمْ یَقُومُ الْقَائِمُ علیه السلام فی عَالَمِهِ حَتَّی یَمُوتَ قال تِسْعَ عَشْرَةَ سَنَةً مِنْ یَوْمِ قِیَامِهِ إِلَی یَوْمِ مَوْتِه

📚Al-Ghaybah, by al-Nu'mani, p. 180

Jabir said: I heard Imam Baqir (peace be upon him) say: By Allah, a man from us, the Ahl al-Bayt, will rule for three hundred years plus nine years. I asked him: When will this happen? The Imam replied: After the death of the Qa'im (peace be upon him)!

I asked him: How long will the Qa'im (peace be upon him) stay during his time until he passes away? He replied: Nineteen years, from the day of his rising until the day of his death!

✅ The narrations regarding the duration of the reign of Imam Mahdi (peace be upon him) vary and can have different aspects.

However, there is no need to resolve the discrepancies or find the differences in these narrations, although the narration of 19 years is considered more authentic. The important thing is that we strive with prayers and supplications to hasten the reappearance of our master.

اللَّهُمَّ صَلِّ عَلَی مُحَمَّدٍ و آلِ مُحَمَّدٍ و عَجِّلْ لِوَلِیِّکَ الْفَرَجَ و الْعَافِیَةَ و النَّصْر

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