We performed tamattu' during the lifetime of the Messenger of Allah ﷺ, sacrificed a cow for seven and a camel for seven people. We shared them.  

كُنَّا نَتَمَتَّعُ فِي عَهْدِ رَسُولِ اللَّهِ ﷺ نَذْبَحُ الْبَقَرَةَ عَنْ سَبْعَةٍ وَالْجَزُورَ عَنْ سَبْعَةٍ نَشْتَرِكُ فِيهَا  

The Prophet ﷺ said: A cow serves for seven, and a camel serves for seven.  

أَنَّ النَّبِيَّ ﷺ قَالَ الْبَقَرَةُ عَنْ سَبْعَةٍ وَالْجَزُورُ عَنْ سَبْعَةٍ  

We sacrificed along with the Messenger of Allah ﷺ at al-Hudaybiyyah a camel for seven and a cow for seven people.  

أَنَّهُ قَالَ نَحَرْنَا مَعَ رَسُولِ اللَّهِ ﷺ بِالْحُدَيْبِيَةِ الْبَدَنَةَ عَنْ سَبْعَةٍ وَالْبَقَرَةَ عَنْ سَبْعَةٍ