Sahih Bukhari Volume 3, Book 27, Hadith Number 20.

Narated By ‘Amr bin Dinar : We asked Ibn ‘Umar whether a man who had performed the Tawaf of the Ka’ba but had not performed the Tawaf between As-Safa and Al-Marwa yet, was permitted to have sexual relation with his wife. He replied, “The Prophet arrived (at Mecca) and circumambulated the Ka’ba seven times and then offered a two Rak’at prayer behind Maqam-lbrahim and then performed the going (Tawaf) between As-Safa and Al-Marwa (seven times) (and verily, in Allah’s Apostle you have a good example.” And we asked Jabir bin ‘Abdullah (the same question) and he replied, “He should not go near her till he has finished the going (Tawaf) between As-Safa and Al-Marwa.”