Mukhtasar Muslim

Ibn Shihab says: I heard Sa'id bin al-Musayyib say that Bahirah is the animal whose milk is reserved for idols so that no person could milk that animal, and Sa'ibah is the one which they would set free in the name of their deities so that no burden was placed upon it. And Ibn al-Musayyib said that Sayyiduna Abu Hurairah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: I saw 'Amr bin 'Amir al-Khuzai dragging his intestines in Hell, and he was the first to introduce the practice of Sa'ibah.