Paksitani Hanafi scholar Allamah Khalil Ahmad Chisti in his...
Paksitani Hanafi scholar Allamah Khalil Ahmad Chisti in his book Maula aur Mu'awiya citing Tayseer al Bari Sharh Bukhari states that it was actually Mu'awiya who said "He (Hasan) was a live coal which Allah has extinguished".
Another Deobandi Hanafi scholar Malik Ghulam 'Ali in his book "Khiafaath aur mulukiyath phur itrizath ki tajzeeya" page 338 cites Wahidudeen az Zaman's text Tayseer al Bari in his discussion of this episode that: "Ameer Mu'awiya's heart was not pure with regards to the Ahl'ul bayt".
Malik Ghulam 'Ali also in "Khiafaath aur mulukiyath phur itrizath ki tajzeeya" page 340 quoting 'Awn Maboodh Sharh Sunan Abu Daud' said as follows: "Maulana Sham al Haqq Haqqani stated, Mu'awiya failed to recognised the esteemed station that had been afforded to the Ahl'ul bayt, he said such a thing at a time when Imam Hasan had died, this was a major tragedy and Hadhrat Miqdam recited the couplets of truth at that tragic time, he did not remain silent, and this is the sign of a pious momin.
The comments of the man from the Asad tribe were said so as to please Mu'awiya. He went close to Mu'awiya and said '(He was) a live coal which Allah has extinguished'. Such strong and obnoxious language was said before Mu'awiya (as with Hasan present he felt that some aspects of reign were in danger)". We agree with this assertion this was said by this Nasibi to please Mu'awiya. Notice how Mu'awiya at no point reprimands the individual for such a disgraceful comment.
If this is not proof within itself that Mu'awiya supported this view, notice the comment of: Al-Miqdam said: Today I shall continue to make you angry and make you hear what you dislike. He then proceeds some faults that he noticed in Mu'awiya. The man from Asad's failure to ask permission BEFORE he slandered Imam Hasan (as) in the prsesence of Mu'awiya is clear proof that he was fully aware that such a comment would not offend Mu'awiya.
In this day and age these supporters of Mu'awiya seek to incite hatred against the Shi'a for they disrespect the Sahaba. We should point out to these Nasibis that their Imam Mu'awiya would disrespect the family of Rasulullah (s) and that insults about Imam Hasan (as) were said in his presence so as to please him.
Hanafi scholar Maulana Sultan Mahmood in his footnote of the Urdu translation of Sunan Abu Daud Voulme 3 page 273 states: "Mu'awiya did not consider Imam Hasan's martyrdom as a sad matter, this was on account of his animosity towards 'Ali and his family".