الكافي- ط الاسلامية, volume 3, page 416

12. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn abu Nasr from Mu‘awiyah ibn ‘Ammar who has said the following: “I asked abu ‘Abd Allah (a.s.), about the hour on Friday in which prayer of a believing person is answered. He replied, ‘Yes, it is the time when the Imam comes out.’ I then said, ‘Imam may come early or late.’ He said, ‘It is when the sun declines toward the west at midday.’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

13. Ali ibn Muhammad has narrated from Sahl ibn Ziyad from ‘Amr ibn ‘Uthman from Muhammad ibn ‘Adhafir from ‘Umar ibn Yazid who has said the following: “Abu ‘Abd Allah (a.s.), said to me, ‘O ‘Umar, on Friday nights angels by the number of atoms come to earth with pens of gold and papers of silver in their hands. They write no other thing until Saturday except about Allahumma Salli ‘Ala Muhammad wa ‘Ali Muhammad (O Allah grant Muhammad and his family a compensation worthy of their serving Your cause). I pray to Allah to grant them such rewards. You should say, “Allahumma Salli ‘Ala Muhammad wa ‘Ali Muhammad (O Allah grant Muhammad and his family a compensation worthy of their serving Your cause) a great deal.” The Imam also said, ‘O ‘Umar, it is of the Sunnah (tradition the Holy Prophet) to say, “Allahumma Salli ‘Ala Muhammad wa ‘Ali Muhammad (O Allah grant Muhammad and his family a compensation worthy of their serving Your cause)” every Friday one thousand times and one hundred times on other days.’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

14. Ali ibn Ibrahim has narrated from his brother, Ishaq ibn Ibrahim, from Muhammad ibn ’Isma‘il ibn Bazi‘ who has said the following: “I once asked al-Rida’ (a.s.), ‘Is it true, as I have heard that Friday is the shortest day?’

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.