Abu Kabshah (may Allah have mercy on him) says that once I imported some lambs to Madinah Munawwarah, but I suffered a loss there. By chance, I met Hazrat Abu Hurairah (may Allah be pleased with him). I asked him some questions and he said: I heard the Noble Prophet (peace and blessings be upon him) say that the lamb is the best animal for sacrifice. According to the narrator, then people took it away.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 9739