Worth of knowing Imam (hgr)[ Imam Zaman] in Holy Quran

يؤْتىِ الْحِكْمَةَ مَن يَشَاءُ وَ مَن يُؤْتَ الحکمة فَقَدْ أُوتىِ َ خَيرًْا كَثِيرًا وَ مَا يَذَّكَّرُ إِلَّا أُوْلُواْ الْأَلْبَاب [بقره/۲۶۹]
Translation:
He granteth wisdom to whom He pleaseth; and he to whom wisdom is granted receiveth indeed a benefit overflowing; but none will grasp the Message but men of understanding. [The holy Quran, Sure Al-Baqarah, Verse269]

Trial of waiters [the people who look forward for Imam Mahdi (hgr)’s emergence] in the Holy Quran

He said to them,
“Allah will test you at the stream: if any drinks of its water, He goes not with my army: Only those who taste not of it go with me: A mere sip out of the hand is excused.” but they all drank of it, except a few… [The Holy Quran, Sure Al-Baqarah, Verse 249]
Imam Sadiq (pbuh) stated, “God tested Prophet Moses`s companions (pbuh) by a stream, Qaem1`s companions (hgr) will have the same test, too.” As God stated (in the Holy Quran, sure Al-Baqarah, verse 249), “Allah tests you with a stream!”

Imam [Imam Mahdi (hgr)] ‘s knowledge in the holy Quran

هوَ الَّذِیَ أَنزَلَ عَلَیْکَ الْکِتَابَ مِنْهُ آیَاتٌ مُّحْکَمَاتٌ هُنَّ أُمُّ الْکِتَابِ وَأُخَرُ مُتَشَابِهَاتٌ فَأَمَّا الَّذِینَ فی قُلُوبِهِمْ زَیْغٌ فَیَتَّبِعُونَ مَا تَشَابَهَ مِنْهُ ابْتِغَاء الْفِتْنَةِ وَابْتِغَاء تَأْوِیلِهِ وَمَا یَعْلَمُ تَأْوِیلَهُ إِلاَّ اللّهُ و الراسخون فِی الْعِلْمِ… [آل عمران/۷]

He it is who has sent down to thee the Book: In it are verses basic or fundamental (of established meaning); they are the foundation of

The events close to the emergence [of Imam Mahdi (hgr)] in Quran

لَنَبْلُوَنَّکُمْ بِشَیْ‏ءٍ مِنَ الْخَوْفِ وَ الْجُوعِ وَ نَقْصٍ مِنَ الْأَمْوالِ وَ الْأَنْفُسِ وَ الثَّمَراتِ وَ بَشِّرِ الصَّابِرینَ [بقره/۱۵۵]
Translation:

We will surely test you with a measure of fear, hunger and a loss of wealth, lives, and fruits; and give good tiding to the patient. ( holy Quran, Sure Al-Baqarah, Verse 155)
Abu Basir narrated, “Imam Sadiq (pbuh) stated:

The occulted imam in Quran?

الَّذِينَ يُؤْمِنُونَ بالغیب وَ يُقِيمُونَ الصَّلاة وَ مِمَّا رَزَقْناهُمْ يُنْفِقُون. [بقره/۳]

Translation:
Righteous are those who believe in the Unseen [the occulted imam], maintain the prayer, and spend out of what we have provided for them [all the gifts by God] (Al-Baqarah, verse 3)

The last administer in Quran

Imam Sadiq (pbuh) stated:

It refers to the very words that prophet Adam (pbuh) learned from his Lord and then he repented;

It was the time that he stated’ O’ God accept my penitence for the sake of Prophet Mohammad(pbuh&h),Imam Ali(pbuh), her majesty Fatima Al- Zahra (pbuh), Imam Hassan(pbuh) and Imam Hussein(pbuh)” and then his penitence was accepted; God is the All-clement, the All-merciful.