Sahih al-Bukhari 6400
Sahih al-Bukhari · Book 80: Invocations · To invoke Allah during a particular time on Friday
Narrated Abu Huraira:
حَدَّثَنَا مُسَدَّدٌ ، حَدَّثَنَا إِسْمَاعِيلُ بْنُ إِبْرَاهِيمَ ، أَخْبَرَنَا أَيُّوبُ ، عَنْ مُحَمَّدٍ ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ قَالَ أَبُو الْقَاسِمِ صلى الله عليه وسلم " فِي الْجُمُعَةِ سَاعَةٌ لاَ يُوَافِقُهَا مُسْلِمٌ وَهْوَ قَائِمٌ يُصَلِّي يَسْأَلُ خَيْرًا إِلاَّ أَعْطَاهُ " . وَقَالَ بِيَدِهِ قُلْنَا يُقَلِّلُهَا يُزَهِّدُهَا .
Abu-l-Qasim (the Prophet) said, "On Friday there is a particular time. If a Muslim happens to be praying and invoking Allah for something good during that time, Allah will surely fulfill his request." The Prophet (ﷺ) pointed out with his hand. We thought that he wanted to illustrate how short that time was.