حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ، وَعُثْمَانُ بْنُ أَبِي شَيْبَةَ الْمَعْنَى، قَالاَ حَدَّثَنَا يَعْلَى بْنُ عُبَيْدٍ، عَنِ الأَعْمَشِ، عَنْ أَبِي ظَبْيَانَ، حَدَّثَنَا أُسَامَةُ بْنُ زَيْدٍ، قَالَ بَعَثَنَا رَسُولُ اللَّهِ صلى الله عليه وسلم سَرِيَّةً إِلَى الْحُرَقَاتِ فَنَذِرُوا بِنَا فَهَرَبُوا فَأَدْرَكْنَا رَجُلاً فَلَمَّا غَشَيْنَاهُ قَالَ لاَ إِلَهَ إِلاَّ اللَّهُ فَضَرَبْنَاهُ حَتَّى قَتَلْنَاهُ فَذَكَرْتُهُ لِلنَّبِيِّ صلى الله عليه وسلم فَقَالَ ‏"‏مَنْ لَكَ بِلاَ إِلَهَ إِلاَّ اللَّهُ يَوْمَ الْقِيَامَةِ ‏"‏ ‏.‏ فَقُلْتُ يَا رَسُولَ اللَّهِ إِنَّمَا قَالَهَا مَخَافَةَ السِّلاَحِ ‏.‏ قَالَ ‏"‏ أَفَلاَ شَقَقْتَ عَنْ قَلْبِهِ حَتَّى تَعْلَمَ مِنْ أَجْلِ ذَلِكَ قَالَهَا أَمْ لاَ مَنْ لَكَ بِلاَ إِلَهَ إِلاَّ اللَّهُ يَوْمَ الْقِيَامَةِ ‏"‏ ‏.‏ فَمَا زَالَ يَقُولُهَا حَتَّى وَدِدْتُ أَنِّي لَمْ أُسْلِمْ إِلاَّ يَوْمَئِذٍ

Usamah bin Zaid reported: The Messenger of Allah (ﷺ) sent us on an expedition to Al-Huruqat. We attacked them by surprise, and they fled. We overtook a man, and when we closed in on him, he said: 'There is no god but Allah.' But we struck him until we killed him. I mentioned that to the Prophet (ﷺ), and he said: 'Who will deal with "There is no god but Allah" on the Day of Resurrection?' I said: 'O Messenger of Allah, he only said it out of fear of the weapon.' He said: 'Did you tear open his heart so that you might know whether he said it for that reason or not? Who will deal with "There is no god but Allah"?' He kept repeating that until I wished I had not embraced Islam until that day.