Al-Kāfi
Hadith 5122- عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ بَعْضِ أَصْحَابِنَا عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) قَالَ سُوقُ الْمُسْلِمِينَ كَمَسْجِدِهِمْ يَعْنِي إِذَا سَبَقَ إِلَى السُّوقِ كَانَ لَهُ مِثْلَ الْمَسْجِدِ.
2. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from certain persons of our people who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘The market-place of Muslims is like their Masjid, that is, whoever comes to a place first is like the Masjid for him (in regards to having more right than others to use it).