It is narrated from Sayyiduna Umar (may Allah be pleased with him) that a man asked him about eating rabbit. He said: "Call Ammar to me." When Sayyiduna Ammar (may Allah be pleased with him) came, Sayyiduna Umar (may Allah be pleased with him) said: "Tell us the incident of the rabbit, when we were with the Messenger of Allah (peace and blessings be upon him) at such-and-such a place." Sayyiduna Ammar (may Allah be pleased with him) related that a Bedouin presented a rabbit to the Messenger of Allah (peace and blessings be upon him) as a gift, and he (peace and blessings be upon him) told the people to eat it. A Bedouin said: "I saw blood coming from it." He (peace and blessings be upon him) said: "There is no harm in it." Then he said: "Come near and eat." He said: "I am fasting." He (peace and blessings be upon him) asked: "Which fast?" He replied that he fasted three days of every month. He (peace and blessings be upon him) said: "Why did you not make them the fasts of the White Days (the 13th, 14th and 15th of the lunar month)?"
Hadith Referenceمسند أبي يعلى الموصلي / مسند عمار بن ياسر / 1612
Hadith Takhrij«قال سعيد بن محمد السناري: ضعيف: دون جملة الحث على صيام الأيام البيض» «أخرجه أبو يوسف في "الآثار" [رقم 1044]، وأبو نعيم في "مسند أبى حنيف" [رقم 302]، والطبرى في "تهذيب الآثار" [رقم 952]- دون جملة الصيام - وابن أبى شيبة في "مسنده" [رقم 444]- دون جملة الصيام - والبيهقى في "سننه" [19183]، وغيرهم، مسند ابویعلیٰ ترقیم الاثری: 1609»