Sunan Abi Dawud 21498
In-book no 994حَدَّثَنَا بِشْرُ بْنُ هِلاَلٍ، حَدَّثَنَا عَبْدُ الْوَارِثِ، عَنْ إِسْمَاعِيلَ بْنِ أُمَيَّةَ، سَأَلْتُ نَافِعًا عَنِ الرَّجُلِ، يُصَلِّي وَهُوَ مُشَبِّكٌ يَدَيْهِ قَالَ قَالَ ابْنُ عُمَرَ تِلْكَ صَلاَةُ الْمَغْضُوبِ عَلَيْهِمْ .
Isma’ll b. Umayyah said: I asked about a man who intertwines his fingers while he is engaged in prayer. He said that Ibn ‘Umar had said: This is the prayer of those who earn the anger of Allah.