Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
muslim:1966cYaḥyá b. Ḥabīb > Khālid / Ibn al-Ḥārith > Shuʿbah > Qatādah > Anas

Qatada informed me that he had heard Anas saying that Messenger of Allah (may peace be npon him) sacrificed (the horned rams) and like that. I said: Did you (Qatada) hear from Anas? He said. Yes.  

مسلم:١٩٦٦cوَحَدَّثَنَا يَحْيَى بْنُ حَبِيبٍ حَدَّثَنَا خَالِدٌ يَعْنِي ابْنَ الْحَارِثِ حَدَّثَنَا شُعْبَةُ أَخْبَرَنِي قَتَادَةُ قَالَ

سَمِعْتُ أَنَسًا يَقُولُ ضَحَّى رَسُولُ اللَّهِ ﷺ بِمِثْلِهِ قَالَ قُلْتُ آنْتَ سَمِعْتَهُ مِنْ أَنَسٍ قَالَ نَعَمْ