Sahih Bukhari Volume 2, Book 26, Hadith Number 708.

Narated By ‘Amr bin Dinar : We asked Ibn ‘Umar whether a man who, while performing ‘Umra, had performed Tawaf of the Ka’ba; and had not yet performed Tawaf between Safa and Marwa, could have sexual relation with his wife, Ibn ‘Umar replied “The Prophet (p.b.u.h) reached Mecca and performed the seven rounds (of Tawaf) of the Ka’ba and then offered a two-Rakat prayer behind Maqam ibrahim and then performed the seven rounds (of Tawaf) between Safa and Marwa.” He added, “Verily! In Allah’s Apostle (p.b.u.h) you have a good example.” We asked Jabir bin ‘Abdullah (the same question) and he said, “He (that man) should not come near (his wife) till he has completed Tawaf between Safa and Marwa.”