عَنْ زِيَادِ بْنِ جُبَيْرٍ قَالَ كُنْتُ مَعَ ابْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا بِمِنًى فَمَرَّ بِرَجُلٍ وَهُوَ يَنْحَرُ بَدَنَةً وَهِيَ بَارِكَةٌ فَقَالَ ابْعَثْهَا قِيَامًا مُقَيَّدَةً سُنَّةَ مُحَمَّدٍ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ
Ziyad bin Jubair says: I was with Sayyiduna Ibn Umar (may Allah be pleased with them both) in Mina, when he passed by a man who was slaughtering his sacrificial animal while it was sitting. So he said: Make it stand up and (slaughter it) while it is standing and tied, and follow the Sunnah of the Messenger of Allah (peace and blessings be upon him).