[Machine] While I was with Abu Sa'id Al-Khudri, accompanying the Messenger of Allah ﷺ , we entered the mosque and saw a man sitting in the middle of the mosque, crossing his fingers with each other. The Messenger of Allah ﷺ pointed at him, but the man did not pay attention to the Prophet's signal. So, he turned to Abu Sa'id and said, "If any one of you is in the mosque, he should not cross his fingers, as this is from Satan. And one of you should remain in prayer as long as he is in the mosque until he exits."
بَيْنَمَا أَنَا مَعَ أَبِي سَعِيدٍ الْخُدْرِيِّ مَعَ رَسُولِ اللهِ ﷺ إِذْ دَخَلْنَا الْمَسْجِدَ فَإِذَا رَجُلٌ جَالِسٌ فِي وَسَطِ الْمَسْجِدِ مُحْتَبِيًا مُشَبِّكٌ أَصَابِعَهُ بَعْضَهَا فِي بَعْضٍ فَأَشَارَ إِلَيْهِ رَسُولُ اللهِ ﷺ فَلَمْ يَفْطِنِ الرَّجُلُ لِإِشَارَةِ رَسُولِ اللهِ ﷺ فَالْتَفَتَ إِلَى أَبِي سَعِيدٍ فَقَالَ إِذَا كَانَ أَحَدُكُمْ فِي الْمَسْجِدِ فَلَا يُشَبِّكَنَّ فَإِنَّ التَّشْبِيكَ مِنَ الشَّيْطَانِ وَإِنَّ أَحَدَكُمْ لَا يَزَالُ فِي صَلَاةٍ مَا دَامَ فِي الْمَسْجِدِحَتَّى يَخْرُجَ مِنْهُ