He used to sacrifice two rams, one on behalf of the Prophet ﷺ and the other on behalf of himself. When asked about this, he said, "He instructed me to do so," meaning the Prophet ﷺ, "so I will never abandon it."
حدثنا محمد بن عبيد المحاربي الكوفي حدثنا شريك عن أبي الحسناء عن الحكم عن حنش
أنه كان يضحي بكبشين أحدهما عن النبي ﷺ والآخر عن نفسه فقيل له فقال أمرني به يعني النبي ﷺ فلا أدعه أبدا
[Its chain of transmission is daif]. Abu Dawud narrated it in the Book of Sacrifices, in the chapter on the udhiya offered on behalf of the deceased, hadith no. 2790, from the hadith of Sharik, with this same wording. Hakim graded it sahih in 4/229, 230, as did Dhahabi, and the two of them said, "Abul-Hasnaa is Hasan bin Hakam." I say, no, rather he is someone else, and he is unknown, while Hakam bin Qutayba and Sharik the judge are both mudallis narrators, and here they both narrated using "an" without stating they heard it directly.