Hadith 8:2608
Abu Bakr narrated to us, he said: Hafs narrated to us, from Hajjaj, who said: I asked Abu Ja'far and 'Ata' about a group of people who participate in hunting while they are in the state of Ihram. They said: "A single penalty."
حدثنا أبو بكر قال نا حفص عن حجاج قال سألت أبا جعفر وعطاء عن القوم يشتركون في الصيد وهم محرمون فقال جزاء واحد