He said, We were at Wasit al-Qasab with Abdul-Ala bin Abdullah bin Amir, and there was a man with him called Abu Ghadiya. He asked for water, and was brought a vessel inlaid with silver, but he refused to drink from it. He mentioned the Prophet ﷺ and related this hadith, "Do not turn back into disbelievers or those gone astray after me," — Ibn Abu Adi was uncertain which word was used — "striking one another's necks."Then a man began cursing so-and-so, so I said, "By Allah, if Allah ever puts you within my reach in a battle line..." On the day of Siffin, there I came upon him wearing a coat of mail. I noticed the gap at the collar of the mail, so I thrust my spear into him and killed him. It turned out to be Ammar bin Yasir.He said, I asked, "What sort of hands are these of his? He refuses to drink from a vessel inlaid with silver, yet he has killed Ammar bin Yasir!"
قال: كنا بواسط القصب عند عبد الأعلى بن عبد الله بن عامر قال: فإذا عنده رجل يقال له: أبو الغادية استسقى ماء فأتي بإناء مفضض، فأبى أن يشرب، وذكر النبي ﷺ، فذكر هذا الحديث: لا ترجعوا بعدي كفارا أو ضلالا- شك ابن أبي عدي يضرب بعضكم رقاب بعض، فإذا رجل يسب فلانا، فقلت: والله لئن أمكنني الله منك في كتيبة، فلما كان يوم صفين، إذا أنا به، وعليه درع، قال: ففطنت إلى الفرجة في جربان الدرع، فطعنته، فقتلته، فإذا هو عمار بن ياسر، قال: قلت: وأي يد كفتاه، يكره أن يشرب في إناء مفضض، وقد قتل عمار بن ياسر.
Abdullah bin Ahmad narrated it in his additions (16998) from Muhammad bin Muthanna Abu Musa, who said, Muhammad bin Abu Adi narrated to us, from Ibn Awn, from Kulthum bin Jabr, who said, and then he mentioned it. Its chain of transmission is hasan because of Kulthum bin Jabr, for his hadith is hasan.