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  

“When one of you becomes frightened during sleep, then let him say: ‘I seek refuge in Allah’s Perfect Words from His anger, His punishment, and the evil of His creatures, from the whisperings of the Shayatin, and that they should come (Aʿūdhu bikalimātillāhit-tāmmati min ghaḍabihī wa ʿiqābihī wa sharri ʿibādih, wa min hamazātish-shayāṭīni wa an yaḥḍurūn).’ For verily, they shall not harm him.” He said: “So ʿAbdullah bin ʿAmr used to teach it to those of his children who attained maturity, and those of them who did not, he would write it on a sheet and then hang it around his neck.”  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِذَا فَزِعَ أَحَدُكُمْ فِي النَّوْمِ فَلْيَقُلْ أَعُوذُ بِكَلِمَاتِ اللَّهِ التَّامَّةِ مِنْ غَضَبِهِ وَعِقَابِهِ وَشَرِّ عِبَادِهِ وَمِنْ هَمَزَاتِ الشَّيَاطِينِ وَأَنْ يَحْضُرُونِ فَإِنَّهَا لَنْ تَضُرَّهُ قَالَ وَكَانَ عَبْدُ اللَّهِ بْنُ عَمْرٍو يُلَقِّنُهَا مَنْ بَلَغَ مِنْ وَلَدِهِ وَمَنْ لَمْ يَبْلُغْ مِنْهُمْ كَتَبَهَا فِي صَكٍّ ثُمَّ عَلَّقَهَا فِي عُنُقِهِ  

[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