The Prophet ﷺ slaughtered two rams, black and white in color (as sacrifices), and I saw him putting his foot on their sides and mentioning Allah's Name and Takbir (Allahu Akbar). Then he slaughtered them with his own hands.  

ضَحَّى النَّبِيُّ ﷺ بِكَبْشَيْنِ أَمْلَحَيْنِ فَرَأَيْتُهُ وَاضِعًا قَدَمَهُ عَلَى صِفَاحِهِمَا يُسَمِّي وَيُكَبِّرُ فَذَبَحَهُمَا بِيَدِهِ  

I saw him sacrificing them with his own hand and saw him placing his foot on their sides, and recited the name of Allah and Glorified Him.  

ضَحَّى رَسُولُ اللَّهِ ﷺ بِكَبْشَيْنِ أَمْلَحَيْنِ أَقْرَنَيْنِ قَالَ وَرَأَيْتُهُ يَذْبَحُهُمَا بِيَدِهِ وَرَأَيْتُهُ وَاضِعًا قَدَمَهُ عَلَى صِفَاحِهِمَا قَالَ وَسَمَّى وَكَبَّرَ  

“The Messenger of Allah ﷺ used to sacrifice two horned, black-and-white rams and he would say the Name of Allah and pronounce His greatness. I saw him slaughtering them with his own hand, putting his foot on their sides.” (Using translation from Ibn Mājah 3120)  

«ضَحَّى رَسُولُ اللَّهِ ﷺ بِكَبْشَيْنِ أَمْلَحَيْنِ أَقْرَنَيْنِ يُسَمِّي وَيُكَبِّرُ وَلَقَدْ رَأَيْتُهُ يَذْبَحُ بِيَدِهِ وَاضِعًا قَدَمَهُ عَلَى صِفَاحِهِمَا»  

[Machine] The Messenger of Allah ﷺ slaughtered two salty sheep with horns, placing his foot on their foreheads, saying the name of Allah and uttering the takbir (saying Allahu akbar), then he slaughtered them with his own hand.  

ضَحَّى رَسُولُ اللهِ ﷺ بِكَبْشَيْنِ أَمْلَحَيْنِ أَقْرَنَيْنِ وَاضِعًا قَدَمَهُ عَلَى صِفَاحَيْهِمَا يُسَمِّي وَيُكَبِّرُ فَذَبَحَهُمَا يَعْنِي بِيَدِهِ  

The Prophet ﷺ offered as sacrifices, two horned rams, black and white in color. He slaughtered them with his own hands and mentioned Allah's Name over them and said Takbir and put his foot on their sides. (Using translation from Bukhārī 5565)   

ضَحَّى رَسُولُ اللهِ ﷺ بِكَبْشَيْنِ أَمْلَحَيْنِ أَقْرَنَيْنِ وَذَبَحَهُمَا بِيَدِهِ وَسَمَّى وَكَبَّرَ وَوَضَعَ رِجْلَهُ عَلَى صِفَاحِهِمَا