Musannaf Ibn Abi Shaybah

A man came to Hazrat Ibn Umar (may Allah be pleased with them both) and said, "O Abu Abdur Rahman! A man who is unaware of the Sunnah, far from home, and whose provisions are also few, after performing all the rites of Hajj, had intercourse with his wife before the Tawaf. What should he do?" He replied, "A camel is obligatory upon you and you must perform the Hajj again next year." The man repeated his question three times, and each time he gave the same answer.