✅ Answer:

1⃣عن مُوسَی بن جَعْفَر قال: إِذَا فُقِدَ الْخَامِسُ مِنْ وُلْدِ السَّابِعِ فَاللَّهَ اللَّهَ فی أَدْیَانِکُمْ لَا یُزِیلُکُمْ أَحَدٌ عَنْهَا یَا بُنَیَّ إِنَّهُ لَا بُدَّ لِصَاحِبِ هَذَا الْأَمْرِ مِنْ غَیْبَةٍ حَتَّی یَرْجِعَ عَنْ هَذَا الْأَمْرِ مَنْ کَانَ یَقُولُ بِهِ إِنَّمَا هِیَ مِحْنَةٌ مِنَ اللَّهِ عَزَّوَجَلَّ امْتَحَنَ بِهَا خَلْقَهُ

📚 Kafi, Vol. 1, p. 336

Imam Kazim, peace be upon him, said: When the fifth descendant of the seventh Imam goes into occultation, then, by Allah! By Allah! Regarding your religions! Be careful that no one separates you from it. O my son! Certainly, the possessor of this matter will have an occultation to the extent that those who believed in it will turn away from it! Indeed, it is a trial from Allah, the Almighty, by which He tests His creation!

✅ According to numerous narrations, most of the Shia in the period of occultation turn away from Shiism, which is a significant danger. Returning from Shiism can lead to becoming a Ghali (exaggerator) or joining false sects like the Isma'il Gateh and others.

✅ However, pay attention to some of the qualities of the saved ones during this time:

2⃣جابر الجعفی قال: قُلْتُ لِأَبِی جَعْفَر مَتَی یَکُونُ فَرَجُکُمْ فَقَال هَیْهَاتَ هَیْهَاتَ لَا یَکُونُ فَرَجُنَا حَتَّی تُغَرْبَلُوا ثُمَّ تُغَرْبَلُوا ثُمَّ تُغَرْبَلُوا یَقُولُهَا ثَلَاثاً حَتَّی یَذْهَبَ الْکَدِرُ و یَبْقَی الصَّفْو

📚 Al-Ghaybah by Tusi, p. 339

Jabir said: I asked Imam Baqir, peace be upon him, about your relief. He said, "Far, far away! Our relief will not come until you are sifted, and then again sifted, and then sifted again (the Imam repeated this three times) until it becomes clear and even, pure and bright!

3⃣ أحمد بن إسحاق قال: دَخَلْتُ علَی أَبِی مُحَمَّدٍ الْحَسَنِ بْنِ عَلِیٍّ...وَ اللَّهِ لَیَغِیبَنَّ غَیْبَةً لَا یَنْجُو فِیهَا مِنَ التَّهْلُکَةِ إِلَّا مَنْ یُثْبِتُهُ اللَّهُ عَلَی الْقَوْلِ بِإِمَامَتِهِ و وَفَّقَهُ لِلدُّعَاءِ بِتَعْجِیلِ فَرَجِه

📚 Kamal Al-Din, Vol. 2, p. 2384

Ahmad bin Ishaq said: I entered upon Imam Hasan Al-Askari, peace be upon him... until he said regarding his son, Imam Mahdi, peace be upon him: By Allah! Certainly, he will have an occultation during which no one will be saved from destruction except the one whom Allah keeps steadfast in believing in his Imamate and grants him the opportunity to pray for the hastening of his reappearance!

4⃣عن الصقر بن دلف قال في حديث عن أَباجعفر محمد بن علی الرضا علیه... فَقُلْتُ لَهُ یا ابْنَ رَسُول اللَّه و لِمَ سُمِّیَ الْقَائِمَ قال لِأَنَّهُ یَقُومُ بَعْدَ مَوْتِ ذِکْرِهِ وَ ارْتِدَادِ أَکْثَرِ الْقَائِلِینَ بِإِمَامَتِهِ فَقُلْتُ لَهُ و لِمَ سُمِّیَ الْمُنْتَظَرَ قَالَ لِأَنَّ لَهُ غَیْبَةً تَکْثُرُ أَیَّامُهَا و یَطُولُ أَمَدُهَا فَیَنْتَظِرُ خُرُوجَهُ الْمُخْلِصُونَ و یُنْکِرُهُ الْمُرْتَابُونَ وَ یَسْتَهْزِئُ بِذِکْرِهِ الْجَاحِدُونَ و یَکْثُرُ فیها الْوَقَّاتُونَ و یَهْلِکُ فیها الْمُسْتَعْجِلُون و یَنْجُو فِیها الْمُسَلِّمُون

📚 Kamal Al-Din, Vol. 2, p. 2378

In a narration from Saqr bin Dalaf, he said: I asked Imam Jawad, peace be upon him, why he is called Al-Qa'im (the riser)? He said: Because after the death of his remembrance, most of the believers will turn back to his Imamate. I asked him: Why is he called Al-Muntazar (the awaited one)? He said: Because he will have an occultation, during which the days will be prolonged, and the duration will be extended, to the point that most of those who believed in him will turn away from it. Only those with strong certainty, correct knowledge, and those who do not find any difficulty in themselves regarding our judgments and are completely submissive to us will remain saved!

5⃣ Imam Sadiq, peace be upon him, said in a Hadith: Indeed, for our Qa'im, there are two occultations, one of them longer than the other... As for the other one, its duration will be prolonged until most people who believed in him will return from this matter. Only the one whose certainty is strong, and whose knowledge and recognition are correct, and who does not feel any distress within himself about our decrees and is completely submissive to us will remain steadfast.

📚 Kamal Al-Din, Vol. 1, p. 324

Imam Sajjad, peace be upon him, said: Indeed, there are two occultations for our Qa'im, one of them is longer than the other. To the extent that he said: But the second occultation will be prolonged until most of those who believed in him turn away from it. Only the one whose certainty is strong, and whose knowledge and recognition are correct, and who does not feel any distress within himself about our decrees and is completely submissive to us will remain saved.

✅ So, purification, supplication, strengthening certainty, correcting knowledge, submission, etc., are conditions for salvation.