!!Sunni references:- Khulafaa al-Rasool, by Khalid Mohammed Khalid, p531 (The above quote includes author's punctuation. ) - Sawaiq al-Muhriqah, by Ibn Hajar al-Haythami, end of Ch. 11, pp 336 Muawiyah and Yazid murdering Imam al-Hasan Ibn Ali (AS) by poison, reported by many, here are a few Sunni references:1. Tathkarat al-Khawass, Sibt ibn al-Jawzi al-Hanafi, pp 191-194.2. Ibn Abd al-Barr, in his Seera 3. al-Suddi 4. al-Sha'bi 5. Abu Nu'aym No reference is required that Yazid and his gang murdered the other son of Ali Ibn Abi Talib, the grandson of the Messenger of Allah (PBUH): Imam al- Husain (AS) along with 70+ of his family members and loyals.More Sunni references on the mischief of Muawiyah: It is reported from Abdullah, son of Ahmad Ibn Hanbal saying: I asked my father about Ali and Muawiyah.He (Ahmad Ibn Hanbal) answered: Know that Ali had a lot of enemies who tried hard to find a fault in him, but they found it not.As such, they joined a man (i. e. , Muawiyah, as given in the footnotes) who verily fought him battled him, and they praised him (Muawiyah) extravagantly setting a snare for themselves for him.Sunni references:- al-Toyuriyyat, by al-Salafi, from Abdullah Ibn Ahmad Hanbal - al-Sawa'iq al-Muhriqah, by Ibn Hajar, Ch. 9, section 4, p197 - History of the Caliphs, by Jalaluddin al-Suyuti, English version, p202 al-Tabari reported:When Muawiyah Ibn Abi Sufyan put al-Mughairah Ibn Shubah in charge of Kufah in Jumada 41 (September 2- October 30, 661), he summoned him. After praising and glorifying God, he said: Now then, indeed a forbearing person has been admonished in the past.The wise might do what you want without instruction. Although I have wanted to advise you about many things, I left them alone, trusting in your discernment of what pleases me, what helps my regime and what sets my subjects [raiyyah] on the right path.I would continue to advise you about a quality of yours- do not refrain from abusing Ali and criticizing him, not from asking God's mercy upon Uthman and His forgiveness for him.Continue to shame the companions of Ali, keep at a distance, and don't listen to them.Praise the faction of Uthman, bring them near, and listen to them.Sunni reference:History of Tabari, English version, events of year 51 AH, Execution of Hujr Ibn Adi, v18, pp 122-123 Also: The Messenger of Muawiyah then came to them with orders to release six and to kill eight, telling them:We have been ordered to let you disavow Ali and curse him.If you do so, we shall release you, and if you refuse, we shall kill you.Sunni reference:History of Tabari, English version, events of year 51 AH, v18, p149 More from Sahih Muslim: Allah's messenger (PBUH) said to Ammar: A group of rebels would kill you.- Sahih Muslim, English version, v4, chapter MCCV, Tradition #6968 Also: Umm Salama narrated that Allah's messenger (may peace be upon him) said: A band of rebels would kill Ammar.- Sahih Muslim, English version, v4, chapter MCCV, Tradition #6970 Do you know that Ammar, the great companion of the Prophet was martyred in the battle of Siffin by Muawiyah soldiers, at the age of ninety-three? Is it clear, now, that The gang of Muawiyah were rebels? Do you know what is the sentence of rebels (Taghee) mentioned in Quran? It is interesting to see that the English translator of Sahih Muslim (Abdul Hamid Siddiqui) has written in the footnote of the above traditions that:This narration is clearly indicative of the fact that in the conflict between Hadrat Ali and his opponents, Hadrat Ali was on the right as Ammar Ibn Yasir was killed in the Battle of Siffin fighting in the camp of Hadrat Ali.(Footnote of Sahih Muslim, English version, v4, p1508).Do I need to comment?! The very first head that was amputated from the body during the Islamic period was of Ammar Ibn Yasir (RA).Ahmad Ibn Hanbal in his Musnad narrates a tradition which has also been mentioned in the Tabaqat of Ibn Sa'd, and is as follows:In the Battle of Sifin, when the head of Ammar Yasir (RA) was cut off and taken to Muawiyya, two people were arguing over it, each one claimed that he had killed Ammar.Sunni references:- Musnad Ahmad (Pub. in Dar al-Maarif, Egypt 1952), Tradition #6538, #6929 - Tabaqat, by Ibn Sa'd, v3, p253 Finally, I would like to finish this article by the following two traditions:The Messenger of Allah (PBUH&HF) said: If one while praying between the Rukn and Maqam (near Ka'bah) and fasting, dies but with the hate of the family of Muhammad, he will enter the Fire.And he who abuses my Ahlul-Bayt is verily an apostate and is driven out of Islam.And he who inflicts pain on my progeny upon him is the curse of Allah.And he who hurts me by hurting my progeny has verily hurt/angered Allah. Certainly Allah has made Paradise forbidden to he who does injustice to my Ahlul-Bayt, or kills them, or assists against them, or abuses them.Sunni reference: al-Sawa'iq al-Muhriqah, by Ibn Hajar al-Haythami, Ch. 11, p357 who said this tradition is authentic.Also: The Messenger of Allah said:Whoever curses (or verbally abuses) Ali, he has, in fact, cursed me, and whoever has cursed me, he has cursed Allah, and whoever has cursed Allah, then Allah will throw him into the Hell-fire.Sunni reference: Musnad Ahmad Ibn Hanbal, v6, p33 Thus Muawiyah and his associates were, in fact, cursing the Prophet (PBUH&HF), and by cursing the Prophet, they were cursing Allah (SWT), and by cursing Allah, they shall enter the hellfire! By Allah, they will be asked to account for what they've said! That is a promise by Allah (SWT) which He shall not break!And do not think Allah to be heedless of what the unjust do; He only respites them upto a day on which the eyes will be fixedly open. (Quran 14:42) Wassalam