Sunan an-Nasa'i #4418 · The Book of ad-Dahaya (Sacrifices)

Sunan an-Nasa'iIt was narrated that Anas bin Malik told them that
Sunan an-Nasa'i · Book 43 · The Book of ad-Dahaya (Sacrifices)
Sunan an-Nasa'i · كتاب 43 · كتاب الأضاحي
the Prophet sacrificed two Amlah horned rams, putting his foot on their sides and slaughtering them pronouncing the name of Allah, and saying: Allahu Akbar."" (Sahih)
أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا يَزِيدُ، - يَعْنِي ابْنَ زُرَيْعٍ - قَالَ حَدَّثَنَا سَعِيدٌ، قَالَ حَدَّثَنَا قَتَادَةُ، أَنَّ أَنَسَ بْنَ مَالِكٍ، حَدَّثَهُمْ أَنَّ نَبِيَّ اللَّهِ صلى الله عليه وسلم ضَحَّى بِكَبْشَيْنِ أَقْرَنَيْنِ أَمْلَحَيْنِ يَطَؤُ عَلَى صِفَاحِهِمَا وَيَذْبَحُهُمَا وَيُسَمِّي وَيُكَبِّرُ ‏.‏
Reference : Sunan an-Nasa'i 4418In-book reference : Book 43, Hadith 58