Imam Hassan al-Mujtaba (The Oppressed of Baqi'a)
Imam Hasan(AS) was given poison several times. When Imam Hasan(AS) felt the danger in the last attempt, he said to his brother Imam Hussain(AS): "My brother, I am leaving you and meeting my Lord. I have been given poison to drink, and have spewed my liver into the basin. I am aware of the person who poisoned me and from where I have been made a subject to this deceitful action.
I will oppose him before Allah, the Great and Almighty." Then he said: "Bury me with my grandfather, the Apostle of Allah(pbuh&hf). For I am worthier of him and his family' (than others). If they prevent you from doing so, then I make you swear by the relation which Allah (swt) has made close to you and by the blood relation to the Apostle of Allah (pbuh&hf) not to shed even your blood into the cupping-glass in (carrying out) my command, till we meet the Apostle of Allah(pbuh&hf) to oppose the people before him and to tell him about what we have suffered from them."
Then Imam Hasan(AS) made his testamentary bequests to his family and his children. He gave Imam Hussain(AS) his heirlooms and the things which the Commander of the faithful (Imam Ali(AS)) had bequeathed to him when he had made him his successor, had declared him worthy to occupy his position, and had indicated to his Shi'a (his followers) that he (Imam Hasan(AS)) was his successor. Then Imam Hasan(AS) died on the 28th of Safar in the year 50 A.H.
Abu al-Faraj al-Isfahani said: "Mu'awiya wanted the people to pledge allegiance to his son Yazid. However, the existence of Imam Hasan(AS) b. 'Ali and of Sa'd b. Abu Waqqas troubled him very much. So he gave them poison to drink, and they died of it."
The abominable disasters of this kind shook the conscience of the Muslim countries. So there were various revolutions throughout history. In this connection Allah (swt), the Exalted, says: "And they who act unjustly shall know to what final place of turning they shall turn back."
Sibt b. al-Jawzi reported on the authority of b. Sa'd on the authority of al-Waqidi, who said: "When Imam Hasan(AS) was about to die, he said: `Bury me beside my father.' He meant the Apostle of Allah(pbuh&hf). However, banu (the sons of ) Umayya and Marwan b. al-Hakam and Said b. al-As, who was the governor over Medina, prevented him." Ibn Sa'd said: "Among them was `A'isha, who said: `No one is buried beside the Apostle of Allah.'"
Abu al-Faraj al-Amawi al-Isfahani reported on the authority of Yahya b. Imam Hasan(AS), who said: "I heard Ali b. Tahir b. Zayd say: `When they wanted to bury Imam Hasan(AS), she (`A'isha) mounted a mule and asked the help of banu (the sons of) Umayya, Marwan, those who were there from them (banu Umayya) and from their servants. So someone said: `One day (she was) on a mule, and one day (she was) on a camel.'"
Al-Mas'udi has mentioned that `A'isha mounted a gray mule and led the Umayyads to declare a second battle against the members of the House (Ahl al-Bayt(AS)). He (al-Mas'udi) said: "So al-Qasim b. Muhammad b. Abu Bakr came to her (`A'isha) and said: `Aunt, we, have not washed our heads since the Battle of the Camel. Do you want people to call this day the Battle of the Gray Mule?' So she came back."
Many people gathered together with Imam Hussain(AS) and said to him: "Leave us with the children of Marwan. By Allah (swt), they are, with us, nothing but an itching of the head."
Imam Hussain(AS) said: `By Allah (swt), if there had been no injunction to me from Imam Hasan(AS) to prevent bloodshed and that I should not even pour blood into a cupping-glass in (carrying out) his command, you would have known how the swords of Allah(swt) would have taken their toll from you. You have broken the agreement which was made between you and us. You have ignored the conditions which we made with you for ourselves." Here Imam Hussain(AS) reminded them of the conditions of the Peace Treaty.
Then they went on with (the body of) Imam Hasan(AS) and they buried him in (the cemetery of) al-Baqi beside his grandmother, Fatima bint Asad(AS) bin Hashim bin Abd Manaf.