It was narrated from Hudhaifah bin Yaman that the Messenger of Allah ﷺ said:
“Islam will wear out as embroidery on a garment wears out, until no one will know what fasting, prayer, (pilgrimage) rites and charity are. The Book of Allah will be taken away at night, and not one Verse of it will be left on earth. And there will be some people left, old men and old women, who will say: “We saw our fathers saying these words: ‘La ilaha illallah’ so we say them too.” Silah said to him: “What good will (saying): La ilaha illallah do them, when they do not know what fasting, prayer, (pilgrimage) rites and charity are?” Hudhaifah turned away from his. He repeated his question three times, and Hudhaifah turned away from him each time. Then he turned to him on the third time and said: “O Silah! It will save them from Hell,” three times.

حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا أَبُو مُعَاوِيَةَ، عَنْ أَبِي مَالِكٍ الأَشْجَعِيِّ، عَنْ رِبْعِيِّ بْنِ حِرَاشٍ، عَنْ حُذَيْفَةَ بْنِ الْيَمَانِ، قَالَ قَالَ رَسُولُ اللَّهِ ﷺ " يَدْرُسُ الإِسْلاَمُ كَمَا يَدْرُسُ وَشْىُ الثَّوْبِ حَتَّى لاَ يُدْرَى مَا صِيَامٌ وَلاَ صَلاَةٌ وَلاَ نُسُكٌ وَلاَ صَدَقَةٌ وَلَيُسْرَى عَلَى كِتَابِ اللَّهِ عَزَّ وَجَلَّ فِي لَيْلَةٍ فَلاَ يَبْقَى فِي الأَرْضِ مِنْهُ آيَةٌ وَتَبْقَى طَوَائِفُ مِنَ النَّاسِ الشَّيْخُ الْكَبِيرُ وَالْعَجُوزُ يَقُولُونَ أَدْرَكْنَا آبَاءَنَا عَلَى هَذِهِ الْكَلِمَةِ لاَ إِلَهَ إِلاَّ اللَّهُ فَنَحْنُ نَقُولُهَا " . فَقَالَ لَهُ صِلَةُ مَا تُغْنِي عَنْهُمْ لاَ إِلَهَ إِلاَّ اللَّهُ وَهُمْ لاَ يَدْرُونَ مَا صَلاَةٌ وَلاَ صِيَامٌ وَلاَ نُسُكٌ وَلاَ صَدَقَةٌ فَأَعْرَضَ عَنْهُ حُذَيْفَةُ ثُمَّ رَدَّهَا عَلَيْهِ ثَلاَثًا كُلَّ ذَلِكَ يُعْرِضُ عَنْهُ حُذَيْفَةُ ثُمَّ أَقْبَلَ عَلَيْهِ فِي الثَّالِثَةِ فَقَالَ يَا صِلَةُ تُنْجِيهِمْ مِنَ النَّارِ . ثَلاَثًا .