676 - وَ سُئِلَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: عَنِ اَلشَّمْسِ كَيْفَ تَرْكُدُ كُلَّ يَوْمٍ وَ لاَ يَكُونُ لَهَا يَوْمَ اَلْجُمُعَةِ رُكُودٌ قَالَ «لِأَنَّ اَللَّهَ عَزَّ وَ جَلَّ جَعَلَ يَوْمَ اَلْجُمُعَةِ أَضْيَقَ اَلْأَيَّامِ» فَقِيلَ لَهُ وَ لِمَ جَعَلَهُ أَضْيَقَ اَلْأَيَّامِ قَالَ «لِأَنَّهُ لاَ يُعَذِّبُ اَلْمُشْرِكِينَ فِي ذَلِكَ اَلْيَوْمِ لِحُرْمَتِهِ عِنْدَهُ.
Hadith.676 - Imam Jafar ibn Muhammad Al-Sadiq 
was asked about the sun’s stillness (or 'pause') every day and why there is no such stillness for it on Jumu’ah.
Imam said: "Because Allah (swt), the Mighty and Majestic, made Jumu’ah the most constricted (or significant) of the days."
It was then asked: "And why did He make it the most constricted of days?"
Imam said: "Because on that day He does not punish the polytheists, due to the sanctity it holds with Him."
