Arabic (Original)
حَدَّثَنَا حَجَّاجٌ أَخْبَرَنَا ابْنُ أَبِي ذِئْبٍ عَنْ سَعِيدٍ الْمَقْبُرِيِّ عَنْ رَجُلٍ مِنْ بَنِي سَالِمٍ عَنْ أَبِيهِ عَنْ جَدِّهِ عَنْ كَعْبِ بْنِ عُجْرَةَ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ لَا يَتَطَهَّرُ رَجُلٌ فِي بَيْتِهِ ثُمَّ يَخْرُجُ لَا يُرِيدُ إِلَّا الصَّلَاةَ إِلَّا كَانَ فِي صَلَاةٍ حَتَّى يَقْضِيَ صَلَاتَهُ وَلَا يُخَالِفْ أَحَدُكُمْ بَيْنَ أَصَابِعِ يَدَيْهِ فِي الصَّلَاةِ.
English Translation
It was narrated to us by Hajjaj, who said: it was reported to us by Ibn Abi Dhi'b, from Sa'id al-Maqburi, from a man from Banu Salim, from his father, from his grandfather, from Ka'b ibn Ujrah, that the Prophet, peace and blessings be upon him, said, "No man purifies himself in his house and then goes out intending nothing but the prayer, except that he is in a state of prayer until he completes his prayer, and let none of you interlace the fingers of his hands during the prayer."