I was with Ibn Umar in a gathering when he heard a man in another gathering saying, "No, by my father!" Ibn Umar threw pebbles at him and said, "This used to be the oath of Umar, but the Prophet ﷺ forbade him from it and said that it is shirk."
حدثنا وكيع حدثنا الأعمش
كنت مع ابن عمر في حلقة قال فسمع رجلا في حلقة أخرى وهو يقول لا وأبي فرماه ابن عمر بالحصى فقال إنها كانت يمين عمر فنهاه النبي ﷺ عنها وقال إنها شرك
Its chain of transmission is sahih. This is a repetition of no. 5222 with the same chain. In M it reads "bil-hasah," and in one copy, in its margin, "bil-hasa," and likewise in the previous narration. As for the plural with a hamza, I did not find it in any of the references. Rather, what is established in them is "hasah" and "hasa," with fatha on the ha and the sad and a nunated short alif, and "hasiyy," with damma on the ha, kasra on the sad, and a doubled ya.It says in Lisan al-Arab, Abu Zayd said, "Hasah and hasiyy are like qanah and qaniyy, nawah and nawiyy, and dawah and dawiyy." He said, this is how Shimr recorded it in his own handwriting. He said, and others said, "You say hasah and hasa, with fatha on the first letter, and likewise qanah and qana, and nawah and nawa, like thamarah and thamar."