Hadith 8:2344
Abu Bakr narrated to us, he said: Ghundar narrated to us, from Ash'ath, from al-Hasan, regarding a man who left his sacrificial animal (badana) in Mina and did not make it known (by marking it or letting people know it was for sacrifice): He said: "It suffices him, but he (al-Hasan) used to like that he make it known."
حدثنا أبو بكر قال حدثنا غندر عن أشعث عن الحسن في رجل ترك بدنته بمنى فلم يعرف بها قال يجزيه وكان يعجبه أن يعرف بها