عَن أنس قَالَ: ضَحَّى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِكَبْشَيْنِ أَمْلَحَيْنِ أَقْرَنَيْنِ ذَبَحَهُمَا بِيَدِهِ وَسَمَّى وَكبر قَالَ: رَأَيْته وضاعا قَدَمَهُ عَلَى صِفَاحِهِمَا وَيَقُولُ: «بِسْمِ اللَّهِ وَاللَّهُ أكبر»
Translation

‘A’isha said that God’s Messenger ordered a horned ram with black legs, a black belly and black round the eyes, and it was brought for him to sacrifice. He told ‘A’isha to get the knife, and then told her to sharpen it with a stone. When she had done so he took it, then taking the ram he placed it on the ground and cut its throat. He then said, "In the name of God. O God, accept it from Muhammad, Muhammad’s family and Muhammad’s people.” Then he sacrificed it. Muslim transmitted it.