Musnad Ahmad 30:3279

Jarir narrated to us, from Mansur, from Abu Hazim, from Abu Hurairah, who said: The Messenger of Allah, may Allah bless him and grant him peace, said: "Whoever performs Hajj to the House and does not commit sexual obscenity (rafath) and does not commit wickedness (fisq), he returns as he was the day his mother gave birth to him."