How many person involved in Sacrifice

دثنا عبد الرحمن بن إبراهيم حدثنا ابن أبي فديک حدثني الضحاک بن عثمان عن عمارة بن عبد الله بن صياد عن عطا بن يسار قال سألت أبا أيوب الأنصاري کيف کانت الضحايا فيکم علی عهد رسول الله صلی الله عليه وسلم قال کان الرجل في عهد النبي صلی الله عليه وسلم يضحي بالشاة عنه وعن أهل بيته فيأکلون ويطعمون ثم تباهی الناس فصار کما تری

It was narrated that ‘Ata’ bin Yasar said: “I asked Abu Ayyub Al-Ansari: ‘How were sacrifices offered among you at the time of the Messenger of Allah?’ He said: ‘At the time of the Prophet, a man would sacrifice a sheep on behalf of himself and the members of his household, and they would eat some of it and give some to others. Then people started to compete and it became as you see (nowadays). ^[1]

^{1) sunen Ibn Majah book 3 no.28 (Aunthatic) 
Amir Amin Lone student MSB}