It is narrated from Sayyiduna Hudhayfah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Islam will fade away just as the embroidery of a garment fades, until it will no longer be known what fasting, charity and the rites of sacrifice are. The Book of Allah will be taken away in a single night, and not a single verse of it will remain on the earth. Groups of people will remain, among them old men and old women, who will say: We found our forefathers upon this word (La ilaha illallah), so we say it too." Silah bin Zufar said to Sayyiduna Hudhayfah (may Allah be pleased with him): When they will not know what fasting, charity and the rites of Hajj are, of what benefit will "La ilaha illallah" be to them? Hudhayfah (may Allah be pleased with him) turned away from him. Silah repeated the question three times, and each time Hudhayfah (may Allah be pleased with him) turned away. Then, on the third time, he turned to him and said: "O Silah! This word will save them from the Fire; it will save them from the Fire; it will save them from the Fire." This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs did not record it.