Ibn Umar visited Yahya bin Saeed and found that one of Yahya's young sons had tied up a chicken and was shooting at it. Ibn Umar walked over to the chicken, untied it, and brought both the chicken and the boy back. He said to Yahya, "Restrain this boy of yours from tying up a bird like this to be killed. I heard the Messenger of Allah ﷺ forbid that any animal, young or otherwise, be tied up to be killed. If you wish to slaughter it, then slaughter it properly."
حدثنا أبو النضر
دخل ابن عمر على يحيى بن سعيد وغلام من بنيه رابط دجاجة يرميها فمشى إلى الدجاجة فحلها ثم أقبل بها وبالغلام وقال ليحيى ازجروا غلامكم هذا من أن يصبر هذا الطير على القتل فإني سمعت رسول الله ﷺ ينهى أن تصبر بهمة أو غيرها لقتل وإن أردتم ذبحها فاذبحوها
Its chain of transmission is sahih. Bukhari related it (9/0554) from Ahmad bin Yaqub from Ishaq bin Saeed, with the same chain, but he did not mention its closing words, "and if you wish to slaughter it, then slaughter it." Hafiz noted in Fath al-Bari that this addition is established in Abu Naeem's Mustakhraj.Yahya bin Saeed, the one whom Ibn Umar visited, is Yahya bin Saeed bin Aas bin Saeed bin Aas bin Umaya. He is the paternal uncle of Saeed bin Amr, the Tabii who related this from Ibn Umar. It was related from him, that is from Saeed, by his son Ishaq bin Saeed bin Amr, the teacher of Abu Nadr here, and the teacher of Ahmad bin Yaqub according to Bukhari. This Yahya was also a Tabii, and he related from Uthman, Muawiya, and Ayesha. He has a biography in Tahdhib (11:215-216). See also 3133, 5587, 5661.Sabr means confining a living creature that has a soul, then throwing something at it until it dies.As for the phrase, "and a boy of his sons tied up," in copy M it reads "and a boy of his sons tied up," and in copy K it reads "and a boy of his sons tied up," and what appears here is a recorded variant noted in the margin of copy K.