بُلُوغُ الْمَرَامِ
Bulugh al-Maram 463
The Book of Prayer
وَعَنْهُ; أَنَّ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -ذَكَرَ يَوْمَ الْجُمُعَةِ فَقَالَ: { فِيهِ سَاعَةٌ لَا يُوَافِقُهَا عَبْدٌ مُسْلِمٌ وَهُوَ قَائِمٌ يُصَلِّي, يَسْأَلُ اَللَّهَ عَزَّ وَجَلَّ شَيْئًا إِلَّا أَعْطَاهُ إِيَّاهُ، وَأَشَارَ بِيَدِهِ يُقَلِّلُهَا } مُتَّفَقٌ عَلَيْه ِ [1] .
Narrated [Abu Hurairah (RA)]: Allah's Messenger (ﷺ) mentioned the day of al-Jumu'ah and then said, "There is a time in it (Friday) at which no Muslim would stand up while praying and beg Allah, Who is Great and Glorious, for something except that He would give it to him. He (ﷺ) indicated with his hand that it (this time) is short." [Agreed upon].
Sunnah.com reference: Book 2, Hadith 383