Imam al-Daraqutni (may Allah have mercy on him) said: In the previous narration the two sons of Abu Shaybah made a mistake, and Imam Ahmad (may Allah have mercy on him) contradicted them both; he narrated it as mursal through Ibn Ulayyah, from Ayyub, from Amr. Likewise did Amr bin Dinar (may Allah have mercy on him) and his companions, and what is mahfuz (preserved) is also that it is mursal.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنايات / 16109