The Excellence of Hajj and ‘Umrah, and the Reward Thereof

10. A number of our people have narrated from Ahmad ibn Muhammad from Ahmad ibn Muhammad ibn abu Nasr from Husayn ibn Khalid who has said the following: “I once asked abu al-Hassan عليه السلام, ‘For what reason is no sin written against a pilgrim for four months?’ He (the Imam) replied, ‘Allah, the Most Majestic, the Most Glorious, granted permission to the pagans in al-Haram area for four months as He has said, ‘You can move in the land for four months.’ (9:2) Thereafter He has said, that He forgives sins of pilgrims to the House for four months.’”