Name: Al-Hasan ibn Ali ibn Abi Talib (a.s.)
Mother: Fatimah az-Zahra (a.s.), the daughter of the Holy Prophet (s.a.w.s.).
Kunniyat (Patronymic): Abu Muhammad
Laqab (Title): Al-Sibt al-Kabir (the elder grandson), Al-Mujtab
Birth: He was born in Madina in the middle of the month of Ramadhan in 3 A.H
Martyrdom: He died on the 28th of Safar in the year 50 A.H. He was buried in the graveyard of Baqi in Madina.
What is the meaning of the hijab? What is meant by hijab?
Surely, the concept of hijab adopted by Islam differs completely from the hijab which was introduced by the civilizations of Jahiliyah including the miserable social phenomena which were existed in the palaces of some Ummayad and Abbasid rulers concerning the exploitation of women in order to achieve their own enjoyment.
Even the term hijab did not enter the ideological life of Muslims except recently. Whatever has been said about woman, the fact remains that Islam's aspiration for protecting her through shaping a special dress for her shows Islam's honuor and respect for her and her dignity, cleanliness and purity.
First and foremost, it is not necessary that the Holy Qur’an explains in detail all the concepts. Given that it actually deals with many things, so it does not get involved with the finer aspects and intricacies.
Yet, there is an affirmative reply to this question as well. Many verses of the Majestic Qur’an do prove the existence and also mention about the government of Hazrat al-Hujjat (a.t.f.s.). Eminent scholars have listed such verses in their books. Among them Allama al-Majlisi (r.a.) deserves special mention for having brought numerous such verses in his book “Behar al-Anwar”, some of which are mentioned hereunder:
وَلَقَدْ كَتَبْنَا فِی الزَّبُورِ مِنْ بَعْدِ الذِّكْرِ أَنَّ الْأَرْضَ یَرِثُهَا عِبَادِیَ الصَّالِحُونَ
“And certainly We wrote in the Book after the reminder that (as for) the land, My righteous servants shall inherit it.”(Surah al-Anbiya’, 21:105)
After the death of Muawiyah bin Abi Sufyan, Yazid ibn Mu'awiya sent a letter to the governor of Medina to take an allegiance from Husain ibn Ali and others. But Husain bin Ali did not swear allegiance to Yazid, and nightly moved with his family to Mecca.  When Imam Husain (AS) stayed in Mecca, many people of Kufa invited him to guide and lead them. Despite the opposition of some people such as Muhammad ibn Abi Bakr and others, Imam Husain (AS) accepted the invitation of the people and moved toward Kufa. Unfortunately, before Imam Husain (AS) arrived to Kufa, he heard that his representative, Muslim bin Aqeel, was martyred by Ibn Ziad, so he did not continue going to Kufa rather he moved towards Karbala. Imam (AS), his children such as Ali Akbar and Ali Asghar as well as his seventy-two of the best companions were martyred in Karbala.
In Nigeria, why do they create such disasters for that peaceful, conciliatory and believing Sheikh [Ibrahim Zakzaky]? Why do they murder about 1,000 people who are close to him? Why do they martyr his six children in the course of two years? Why does the world of Islam remain silent in the face of such crimes? ...
Is this to the interest of the world of Islam? ... Enemies' goals are dangerous goals. They are devised in their – as they say – “think tanks”. We should be awake.
~Ayatollah Khamenei, December 29, 2015