حَدَّثَنَا عَتَّابٌ حَدَّثَنَا أَبُو حَمْزَةَ يَعْنِي السُّكَّرِيَّ عَنِ ابْنِ أَبِي لَيْلَى عَنْ صَدَقَةَ الْمَكِّيِّ عَنِ ابْنِ عُمَرَ قَالَ اعْتَكَفَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي الْعَشْرِ الْأَوَاخِرِ مِنْ رَمَضَانَ فَاتُّخِذَ لَهُ فِيهِ بَيْتٌ مِنْ سَعَفٍ قَالَ فَأَخْرَجَ رَأْسَهُ ذَاتَ يَوْمٍ فَقَالَ إِنَّ الْمُصَلِّيَ يُنَاجِي رَبَّهُ عَزَّ وَجَلَّ فَلْيَنْظُرْ أَحَدُكُمْ بِمَا يُنَاجِي رَبَّهُ وَلَا يَجْهَرْ بَعْضُكُمْ عَلَى بَعْضٍ بِالْقِرَاءَةِ
مسند امام احمد بن حنبل · Hadith 5349
It was narrated that Ibn Umar said: The Messenger of Allah (PBUH) observed i'tikaaf during the last ten days of Ramadan. A hut was made for him out of palm leaves. He stuck his head out one day and said. "When one of you is praying, he is conversing with his Lord (PBUH), so let one of you think of what he is saying when he is conversing with his Lord, and do not raise your voices over one another when reciting in prayer."
Sanad
حَدَّثَنَا عَتَّابٌ حَدَّثَنَا أَبُو حَمْزَةَ يَعْنِي السُّكَّرِيَّ عَنِ ابْنِ أَبِي لَيْلَى عَنْ صَدَقَةَ الْمَكِّيِّ عَنِ ابْنِ عُمَرَ