كتاب الجمعة
5  
Jumu'a

Yahya related to me from Malik from Abu'z Zinad from al-Araj from Abu Hurayra that the Messenger of Allah, may Allah bless him and grant him peace, mentioned the day of jumua and said, "There is a time in it when Allah gives to a muslim slave standing in prayer whatever he asks for," and the Messenger of Allah, may Allah bless him and grant him peace, indicated with his hand how small it was.

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ أَبِي الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم ذَكَرَ يَوْمَ الْجُمُعَةِ فَقَالَ ‏ "‏ فِيهِ سَاعَةٌ لاَ يُوَافِقُهَا عَبْدٌ مُسْلِمٌ وَهُوَ قَائِمٌ يُصَلِّي يَسْأَلُ اللَّهَ شَيْئًا إِلاَّ أَعْطَاهُ إِيَّاهُ ‏"‏ ‏.‏ وَأَشَارَ رَسُولُ اللَّهِ صلى الله عليه وسلم بِيَدِهِ يُقَلِّلُهَا ‏.‏
USC-MSA web (English) reference : Book 5, Hadith 16
Arabic reference : Book 5, Hadith 239