Sahih Muslim Book - 13, Hadith - 2771

وَحَدَّثَنِى مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى حَدَّثَنَا الْمُعْتَمِرُ حَدَّثَنَا عُمَارَةُ بْنُ غَزِيَّةَ الأَنْصَارِىُّ قَالَ سَمِعْتُ مُحَمَّدَ بْنَ إِبْرَاهِيمَ يُحَدِّثُ عَنْ أَبِى سَلَمَةَ عَنْ أَبِى سَعِيدٍ الْخُدْرِىِّ - رضى الله عنه - قَالَ إِنَّ رَسُولَ اللَّهِ -صلى الله عليه وسلم- اعْتَكَفَ الْعَشْرَ الأَوَّلَ مِنْ رَمَضَانَ ثُمَّ اعْتَكَفَ الْعَشْرَ الأَوْسَطَ فِى قُبَّةٍ تُرْكِيَّةٍ عَلَى سُدَّتِهَا حَصِيرٌ - قَالَ - فَأَخَذَ الْحَصِيرَ بِيَدِهِ فَنَحَّاهَا فِى نَاحِيَةِ الْقُبَّةِ ثُمَّ أَطْلَعَ رَأْسَهُ فَكَلَّمَ النَّاسَ فَدَنَوْا مِنْهُ فَقَالَ « إِنِّى اعْتَكَفْتُ الْعَشْرَ الأَوَّلَ أَلْتَمِسُ هَذِهِ اللَّيْلَةَ ثُمَّ اعْتَكَفْتُ الْعَشْرَ الأَوْسَطَ ثُمَّ أُتِيتُ فَقِيلَ لِى إِنَّهَا فِى الْعَشْرِ الأَوَاخِرِ فَمَنْ أَحَبَّ مِنْكُمْ أَنْ يَعْتَكِفَ فَلْيَعْتَكِفْ ». فَاعْتَكَفَ النَّاسُ مَعَهُ قَالَ « وَإِنِّى أُرِيتُهَا لَيْلَةَ وِتْرٍ وَأَنِّى أَسْجُدُ صَبِيحَتَهَا فِى طِينٍ وَمَاءٍ ». فَأَصْبَحَ مِنْ لَيْلَةِ إِحْدَى وَعِشْرِينَ وَقَدْ قَامَ إِلَى الصُّبْحِ فَمَطَرَتِ السَّمَاءُ فَوَكَفَ الْمَسْجِدُ فَأَبْصَرْتُ الطِّينَ وَالْمَاءَ فَخَرَجَ حِينَ فَرَغَ مِنْ صَلاَةِ الصُّبْحِ وَجَبِينُهُ وَرَوْثَةُ أَنْفِهِ فِيهِمَا الطِّينُ وَالْمَاءُ وَإِذَا هِىَ لَيْلَةُ إِحْدَى وَعِشْرِينَ مِنَ الْعَشْرِ الأَوَاخِرِ.

It was narrated that Abu Sa’eed Al-Khudri [may Allah be pleased with them] said: “The Messenger of Allah (SAW) observed I’tikaf during the first ten days of Ramadan, then he observed I’tikaf during the middle ten days, in a Turkish tent that had a reed mat over the door. He took hold of the mat and put it in the corner of the tent, then he put his head out and spoke to the people, who drew close to him. He said: ‘I observed I’tikaf during the first ten days, seeking this night, then I observed I’tikaf during the middle ten. Then someone came to me and I was told that it is in the last ten nights, so whoever among you wants to observe I’tikaf, let him do so.’ So the people observed I’tikaf with him. And he said: ‘I was shown that it is an odd-numbered night, and that I was prostrating the following morning in mud and water.’ On the morning of the twenty-first, when he got up to pray Subh, it had rained and the Masjid had leaked. When he came out after praying Subh, there was water and mud on his forehead and on the tip of his nose, and that was the night of the twenty-first, one of the last ten nights.”