The Messenger of Allah ﷺ sued to teach them the following words in the case of alarm: I seek refuge in Allah's perfect words from His anger, the evil of His servants, the evil suggestions of the devils and their presence. Abdullah ibn Amr used to teach them to those of his children who had reached puberty, and he wrote them down (on some material) and hung on the child who had not reached puberty.  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يُعَلِّمُهُمْ مِنَ الْفَزَعِ كَلِمَاتٍ أَعُوذُ بِكَلِمَاتِ اللَّهِ التَّامَّةِ مِنْ غَضَبِهِ وَشَرِّ عِبَادِهِ وَمِنْ هَمَزَاتِ الشَّيَاطِينِ وَأَنْ يَحْضُرُونِ وَكَانَ عَبْدُ اللَّهِ بْنُ عَمْرٍو يُعَلِّمُهُنَّ مَنْ عَقَلَ مِنْ بَنِيهِ وَمَنْ لَمْ يَعْقِلْ كَتَبَهُ فَأَعْلَقَهُ عَلَيْهِ  

[Machine] The Prophet ﷺ used to teach us words to say before sleeping out of fear. "In the name of Allah, I seek refuge in the perfect words of Allah from His anger, punishment, evil slaves, and from the whispers of devils and their presence." Abdullah bin Amr used to teach it to those of his sons who had reached the age of understanding, and he would write it for those who were still young and put it on their necks.  

كَانَ رَسُولُ اللهِ ﷺ يُعَلِّمُنَا كَلِمَاتٍ نَقُولُهُنَّ عِنْدَ النَّوْمِ مِنَ الْفَزَعِ بِسْمِ اللهِ أَعُوذُ بِكَلِمَاتِ اللهِ التَّامَّة مِنْغَضَبِهِ وَعِقَابِهِ وَشَرِّ عِبَادِهِ وَمِنْ هَمَزَاتِ الشَّيَاطِينِ وَأَنْ يَحْضُرُونِ قَالَ فَكَانَ عَبْدُ اللهِ بْنُ عَمْرٍو يُعَلِّمُهَا مَنْ بَلَغَ مِنْ وَلَدِهِ أَنْ يَقُولَهَا عِنْدَ نَوْمِهِ وَمَنْ كَانَ مِنْهُمْ صَغِيرًا لَا يَعْقِلُ أَنْ يَحْفَظَهَا كَتَبَهَا لَهُ فَعَلَّقَهَا فِي عُنُقِهِ  

[Machine] I heard the Messenger of Allah ﷺ commanding with these words of alarm, "I seek refuge in the perfect words of Allah from His anger, His punishment, the evil deeds of His servants, and the whispers of devils, and that they come near." Abdullah bin Umar and those who reached from his children taught them to him, so he recited them in front of his people. And whoever did not reach from them, he wrote them and hung them around his neck.  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَأْمُرُ بِكَلِمَاتٍ مِنَ الْفَزَعِ «أَعُوذُ بِكَلِمَاتِ اللَّهِ التَّامَّاتِ مِنْ غَضَبِهِ وَمِنْ عِقَابِهِ وَمِنْ شَرِّ عِبَادِهِ وَمِنْ هَمَزَاتِ الشَّيَاطِينِ وَأَنْ يَحْضُرُونَ» قَالَ كَانَ عَبْدُ اللَّهِ بْنُ عُمَرَ وَمَنْ بَلَغَ مِنْ وَلَدٍ عَلَّمَهُنَّ إِيَّاهُ فَقَالَهُنَّ عِنْدَ قَوْمِهِ وَمَنْ لَمْ يَبْلُغْ مِنْهُمْ كَتَبَهَا فَعَلَّقَهَا فِي عُنُقِهِ  

"إِذَا فزعَ أحدُكُم في النَّوم فليقلْ: باسْم الله أعوذُ بكلماتِ الله التَّامة مِنْ غضبِه وشرِّ عقابه وشرِّ عبِاده، ومِنْ همزاتِ الشَّياطين وأنْ يحضرون؛ فإِنها لنْ تَضُرَّه".