صَحِيحُ مُسْلِمٍ
Sahih Muslim 1167 b
The Book of Fasting
The virtue of Lailat Al-Qadr and the Exhortation to seek it; When it is and the most likely times to seek it
وَحَدَّثَنَا ابْنُ أَبِي عُمَرَ، حَدَّثَنَا عَبْدُ الْعَزِيزِ، - يَعْنِي الدَّرَاوَرْدِيَّ - عَنْ يَزِيدَ، عَنْ مُحَمَّدِ بْنِ إِبْرَاهِيمَ، عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، - رضى الله عنه - أَنَّهُ قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُجَاوِرُ فِي رَمَضَانَ الْعَشْرَ الَّتِي فِي وَسَطِ الشَّهْرِ . وَسَاقَ الْحَدِيثَ بِمِثْلِهِ غَيْرَ أَنَّهُ قَالَ فَلْيَثْبُتْ فِي مُعْتَكَفِهِ . وَقَالَ وَجَبِينُهُ مُمْتَلِئًا طِينًا وَمَاءً .
Abu Sa'id al-Khudri (Allah be pleased with him) reported that the Messenger of Allah (ﷺ) devoted (himself to prayer) in the middle (ten nights) of Ramadan. The rest of the hadith is the same except for these words: " That he adhered to his place of i'tikaf and his forehead was besmeared with mud and water."
Sahih Muslim, 1167 bSahihصحيح