He lost one of his eyes in the battle of Yarmuk. Ibn Qutaybah has included him in the list of the one-eyed. Abu Bakr's sister Umm Farwah bint Abi Quhafah, who was once the wife of an al-Azdi and then of Tamim ad-Darimi, was on the third occasion married to this al-Ash`ath. Three sons were born of her viz. Muhammad, Isma`il and Is'haq. Books on biography show that she was blind. Ibn Abi'l-Hadid has quoted the following statement of Abu'l-Faraj wherefrom it appears that this man was equally involved in the assassination of `Ali (p.b.u.h.): On the night of the assassination Ibn Muljam came to al-Ash`ath ibn Qays and both retired to a corner of the mosque and sat there when Hujr ibn `Adi passed by that side and he heard al-Ash`ath saying to Ibn Muljam, "Be quick now or else dawn's light would disgrace you." On hearing this Hujr said to al-Ash`ath, "O' one-eyed man, you are preparing to kill 'Ali" and hastened towards `Ali ibn Abi Talib, but Ibn Muljam had preceded him and struck 'Ali with sword when Hujr turned back people were crying, "Ali has been killed."
It was his daughter who killed Imam Hasan (p.b.u.h.) by poisoning him. Mas`udi has written that: His (Hasan's) wife Ja`dah bint al-Ash`ath poisoned him while Mu`awiyah had conspired with her that if she could contrive to poison Hasan he would pay her one hundred thousand Dirhams and marry her to Yazid. (Muruj adh-dhahab, vol. 2, p. 650)
His son Muhammad ibn al-Ash`ath was active in playing fraud with Hadrat Muslim ibn `Aqil in Kufah and in shedding Imam Husayn's blood in Karbala. But despite all these points he is among those from whom al-Bukhari, Muslim, Abu Dawud, at-Tirmidhi, an-Nasa'i and Ibn Majah have related traditions. Thank you.
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