Amr says that we asked Jabir (may Allah be pleased with him): "Can a person who has performed the tawaf of the House (Ka'bah) but has not yet performed the sa'i between al-Safa and al-Marwah go to his wife?" He said: "No." And they asked Ibn Umar (may Allah be pleased with them both), and he said: "The Prophet (peace and blessings be upon him) came and went round the House seven times, then prayed two rak'ahs behind the Maqam, and went round between al-Safa and al-Marwah seven times; and: Indeed, in the Messenger of Allah you have an excellent example [Surah al-Ahzab: 21]."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9363