Hadith 1:

علي بن إبراهيم، عن أبيه، عن محمد بن خالد، عمن حدثه، عن المفضل ابن عمر، ومحمد بن يحيى، عن عبد الله بن محمد بن عيسى، عن أبيه، عن بعض أصحابه عن المفضل بن عمر، عن أبي عبد الله عليه السلام قال: أقرب ما يكون العباد من الله جل ذكره وأرضى ما يكون عنهم إذا افتقدوا حجة الله عز وجل ولم يظهر لهم ولم يعلموا مكانه وهم في ذلك يعلمون أنه لم تبطل حجة الله جل ذكره ولا ميثاقه، فعندها فتوقعوا الفرج صاحبا ومساء، فإن أشد ما يكون غضب الله على أعدائه إذا افتقدوا حجته ولم يظهر لهم، وقد علم أن أولياءه لا يرتابون، ولو علم أنهم يرتابون ما غيب حجته عنهم طرفه عين، ولا يكون ذلك إلا على رأس شرار الناس

Abu Abdillah Imam Sadiq (as) said:

"This group (the shias) will be most closer to Allah (swt) and Allah (swt) will be most pleased with them when they miss the divine proof of Allah (swt) (i.e. Imam Mahdi عج) and the Imam will not be visible for them and they will not know his place. And despite this, they will know that divine proof of Allah (swt) and His promise/covenant cannot be invalidated. Its then that you have to wait for the deliverance (Farj) in the morning and evening."

"And indeed Allah's anger for His enemies is most intense when the divine proof of Allah (swt) will be out of public sight and will not appear to them. And Allah (swt) knows that His friends will not be in doubt (about the Imam), had it been in  that they would doubt, he would not hide His divine proof from them for even blinking of an eye."

(last few words of the hadith not included in the translation, as  is not clear)

[Source: al-Kafi, Vol.1, Pg. 333]

Hadith 2:

شَرَفُ الدِّينِ النَّجَفِيُّ،قَالَ:رَوَى صَاحِبُ كِتَابِ(الْبِشَارَاتِ)مَرْفُوعاً إِلَى الْحُسَيْنِ بْنِ أَبِي حَمْزَةَ، عَنْ أَبِيهِ،قَالَ: قُلْتُ لِأَبِي عَبْدِ اللَّهِ(عَلَيْهِ السَّلاَمُ):جُعِلْتُ فِدَاكَ،قَدْ كَبِرَ سِنِّي،وَ دَقَّ عَظْمِي،وَ اقْتَرَبَ أَجَلِي،وَ قَدْ خِفْتُ أَنْ يُدْرِكَنِي قَبْلَ هَذَا الْأَمْرِ الْمَوْتُ.

قَالَ:فَقَالَ لِي«يَا أَبَا حَمْزَةَ،[أَ وَ مَا تَرَى الشَّهِيدَ إِلاَّ مَنْ قُتِلَ؟»قُلْتُ:نَعَمْ،جُعِلْتُ فِدَاكَ.فَقَالَ لِي:«يَا أَبَا حَمْزَةَ،] مَنْ آمَنَ بِنَا،وَ صَدَّقَ حَدِيثَنَا،وَ انْتَظَرَ أَمْرَنَا،كَانَ كَمَنْ قُتِلَ تَحْتَ رَايَةِ الْقَائِمِ(عَلَيْهِ السَّلاَمُ)،بَلْ وَ اللَّهِ تَحْتَ رَايَةِ رَسُولِ اللَّهِ(صَلَّى اللَّهُ عَلَيْهِ وَ آلِهِ)

Narrated by al-Husain bin Abi Hamzah from his father,

I said to Imam Sadiq (as), "May I be sacrificed for You, I have become old and my bones have become fragile and my death is close and I am afraid that death will reach me before (I witness) this matter (Coming of Imam Mahdi ع)."

Imam Sadiq (as) said, "O Abu Hamzah, do you think that only those killed are Shaheed?"

I (Abu Hamzah) said, "Yes, May I be sacrificed for You."

Imam (as) said, "O Abu Hamzah, whoever believes in Us, accepts Our sayings and waits for Our Authority (Amr), is like the one killed under the flag/banner of al-Qaim (atfs), rather, by Allah (swt), under the banner of the Prophet (saww)."

[Source: Taweel al Aayat, Vol. 2, Pg. 666]

Hadith 3:

Narrated that Imam Ridha (عليه السلام) said to Yunus bin Abd Al-Rahman as part of a narration:

فقال: هكذا أنت يا يونس، اذ كنت على الصواب و كان امامك عنك راضيا لم يضرك ما قال الناس 

"If you are upon rightness and your Imam is pleased with you then what the people say would not harm you"

[Source: Rijal al-Kashshi, Vol. 2, Pg. 782]