Al-Kāfi - The Book of Prayer

Chapter: The Excellence of Friday and its Night َّدُ بْنُ الْحَسَنِ عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ أَحْ٠ُفَضَّلِ بْنِ صَالِحٍ عَنْ جَابِرِ بْنِ يَ��ِيدَ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ الْسَّلا٠) قَالَ قُلْتُ لَهُ قَوْلُ الله عَزَّ وَجَلَّ فَاسْعَوْا إِلى‏ ذِكْرِ الله قَالَ اعْ٠َلُوا وَعَجِّلُوا فَإِنَّهُ يَوْ٠ُضَيَّقٌ عَلَى الْ٠ِينَ فِيهِ وَثَوَابُ أَعْ٠ِينَ فِيهِ عَلَى قَدْرِ ٠َا ضُيِّقَ عَلَيْهِ٠ْ وَالْحَسَنَةُ وَالسَّيِّئَةُ تُضَاعَفُ فِيهِ قَالَ وَقَالَ أَبُو جَعْفَرٍ (عَلَيْهِ الْسَّلا٠) وَالله لَقَدْ بَلَغَنِي أَنَّ أَصْحَابَ النَّبِيِّ (صلّى اللهُ عَلَيْهِ وَآلِه) كَانُوا يَتَجَهَّزُونَ لِلْجُ٠ِيسِ لأَنَّهُ يَوْ٠ُضَيَّقٌ عَلَى الْ٠10.

Ali ibn Muhammad and Muhammad ibn al-Hassan have narrated from Sahl ibn Ziyad from Ahmad ibn Muhammad from al-Mufaddal ibn Salih from Jabir ibn Yazid who has said the following: “I asked abu Ja’far (a.s.), about the words of Allah, the Most Majestic, the Most Glorious, ‘Hasten to remember Allah....’ (62:9). He replied, ‘It means do good deeds and do it promptly; it is a busy day for the Muslims. The reward for the deeds of the Muslims is proportionate to the degree of its business.

Both good and bad deeds double on this day.’ The narrator has said that abu Ja’far (a.s.), has said, ‘By Allah, I have received reports that the companions of the Holy Prophet would prepare themselves on Thursday for Friday; it is a busy day for the Muslims.’” ضعيف - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (15/342))