Accordingly...

Accordingly, the Emperor of Rome was satisfied with that and sent him a deadly poison.[^1] When the poison reached Mu’awiya, he thought of a way to send it to Imam al-Hasan. He thought of the Imam’s relatives and their relatives but he could find none to help him [^1] Bihar al-Anwar, vol. 10, p. 173. commit this crime.

Then he thought of the Imam’s wives and concluded that Ja’dah, daughter of al-Ash‘ath, would meet his request, for her father had forced Imam Ali (a.s), to accept the arbitration and spoiled his army. Mu’awiya was sure that al-Ash‘ath’s daughter would help him achieve his objective and get his wish. At last he sent her the poison with the sinful one, Marwan bin al-Hakam.

He commanded Marwan to make Ja’dah desire for marrying Yazid and to give her a hundred thousand dirhams.[^1] It was appropriate for this sinful woman to respond to the request of Mu’awiya. Ja’dah belonged to a bad family with a black history and was disposed by nature for responding to all material motives. Concerning her, Imam al-Sadiq (a.s) has said: “Surely al-Ash‘ath took part in shedding the blood of Imam Ali. His daughter Ja’dah poisoned al-Hasan.

And his son took part in shedding the blood of al-Husayn.”[^2] Besides, Ja’dah suffered from complexes because she had no child from the Imam and was treated ordinarily in her house. Marwan carried the poison to Ja’dah. He gave her the money and made her desire for marrying Yazid if she responded to his request. Satan whispered evil to her, so she became happy with the money and marrying with Yazid. So she accepted to commit the crime. She took the poison from Marwan.

Imam al-Hasan was fasting during a very hot time. She served his food and put the poison into the yogurt. The Imam took a mouthful of it. When the poison reached his bowels, it destroyed them. When Imam al-Hasan felt bitter pain, he (a.s) said: “To Allah we belong and to Him is our return!

Praise belongs to Allah for meeting Muhammad, the master of the Apostles, my father, the master of the guardians, my mother, the principal of the women of the world, my uncle, Ja‘far al-Tayyar, and Hamza, the master of martyrs.” Then he turned to Ja’dah and said to her: “O enemy of Allah, you have killed me! May Allah kill you! By Allah, you will not get a successor after me. He (Mu’awiya) has deceived and mocked at you.

May Allah disgrace you and him!”[^3] Certainly Allah disgraced her, for she has been cited as an example of evil, disgrace, sin, and treason.