Sunan al-Nasa'i The Book of Fasting Abu Nawful bin Aby أبو نوفل بن أبي al-Aswad bin Shayban al-Sadusi الأسود بن شيبان السدوسي Amr bin 'Ali bin Bahr al-Bahli عمرو بن علي بن بحر الباهلي a man brought a rabbit to the Prophet, and the prophet stretched out his hand toward it, then the one who had brought it said: “I saw some blood on it,” So the Prophet drew his hand back, but he told the people to eat. Among the people there was a man who held back. The Prophet said: “What is the matter with you?” He said: “I am fasting.” The Prophet said to him: “Why don’t you fast on the three days of Al-Bid, the thirteenth, fourteenth and fifteenth?” https://parallelquran.com/hadith/sunan-al-nasai-2433/ Sunan al-Nasa'i The Book of Fasting Abu Nawful bin Aby أبو نوفل بن أبي al-Aswad bin Shayban al-Sadusi الأسود بن شيبان السدوسي Yazid bin Harun يزيد بن هارون “A rabbit that a man had grilled was brought to the Prophet and when he offered it to him he said: ‘O Messenger of Allah, I saw some blood on it.” The Messenger of Allah did not eat it, but he said to those who were with him: “Eat; if I felt like it, I would have eaten it.’ There was a man sitting, and the Messenger of Allah said: ‘Come and eat with the people.’ He said: ‘O Messenger of Allah, I am fasting.’ He said: ‘Why don’t you fast Al-Bid?’ He said: ‘What are they?’ He said: “The thirteenth, fourteenth and fifteenth?”‘ https://parallelquran.com/hadith/sunan-al-nasai-2434/