Musannaf Ibn Abi Shaybah

According to Hazrat Aisha (may Allah be pleased with her) and Hazrat Ibn Umar (may Allah be pleased with them both), { مَا اسْتَیْسَرَ مِنَ الْہَدْیِ } refers to a camel or a cow, and according to Hazrat Ibn Abbas (may Allah be pleased with them both), { مَا اسْتَیْسَرَ مِنَ الْہَدْیِ } refers to a goat.