684 - وَقَالَ أَبُو جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ لِأَبِي حَمْزَةَ اَلثُّمَالِيِّ: «اَلْمَسَاجِدُ اَلْأَرْبَعَةُ اَلْمَسْجِدُ اَلْحَرَامُ وَ مَسْجِدُ اَلرَّسُولِ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ وَ مَسْجِدُ بَيْتِ اَلْمَقْدِسِ وَ مَسْجِدُ اَلْكُوفَةِ يَا أَبَا حَمْزَةَ اَلْفَرِيضَةُ فِيهَا تَعْدِلُ حَجَّةً وَ اَلنَّافِلَةُ تَعْدِلُ عُمْرَةً.
Hadith.684 - Abu Ja'far, Imam Muhammad ibn Ali Al-Baqir 
, said to Abu Hamzah al-Thumali:
"The four mosques are: the Sacred Mosque (Masjid al-Haram), the Mosque of the Messenger (Masjid al-Nabawi), the Mosque of Bayt al-Maqdis (Jerusalem), and the Mosque of Kufa.
O’ Abu Hamzah, performing an obligatory prayer in any of these mosques is equivalent to performing a pilgrimage (Hajj), and a supererogatory (optional) prayer in them is equivalent to performing an ‘Umrah (minor pilgrimage)."
