Hadith 8:100
Abu Bakr narrated to us, he said: Hafs narrated to us, from Ibn Jurayj, from 'Ata', who said: The Hajj is not corrupted until the two circumcised parts meet. So if the two circumcised parts meet, the Hajj is corrupted and the penalty (dam) becomes obligatory.
حدثنا أبو بكر قال ثنا حفص عن بن جريج عن عطاء قال لا يفسد الحج حتى يلتقي الختانان فإذا التقى الختانان فسد الحج ووجب الغرم