Hadith 8:1305
Abu Bakr narrated to us, he said: Ibn Abi Adi narrated to us, from Ash'ath, from al-Hasan, regarding a man who performed the obligatory circumambulation (Tawaf) and began passing through the Hijr (the semi-circular area). He said: He must repeat the circumambulation. If he had already exited the state of Ihram and had intercourse with women, he must slaughter an animal for that.
حدثنا أبو بكر قال حدثنا بن أبي عدي عن أشعث عن الحسن في رجل طاف الطواف الواجب فجعل يجتاز في الحجر قال يعيد الطواف فإن كان حل وغشي النساء أهرق لذلك دما