A part of the same sermon منه: في حال أهل القبور في القيامة They have got up from the resting places in their graves and have set off for the final objectives. Every house has its own people. They are not changed nor shifted from there. Commanding for good and refraining from evil are two characteristics of Allah, the Glorified. They can neither bring death near nor lessen sustenance.
You should adhere to the Book of Allah because it is the strong rope, a clear light, a benefiting cure, a quenching for thirst, protection for the adherent and deliverance for the attached. It does not curve so as to need straightening and does not deflect so as to be corrected. Frequency of its repetition and its falling on ears does not make it old. Whoever speaks according to it, speaks truth and whoever acts by it is forward (in action).
وَعَلَيْكُمْ بِكِتَابِ اللهِ، فَإِنَّهُ الْحَبْلُ الْمَتِينُ، وَالنُّورُ الْمُبِينُ، وَالشِّفَاءُ النَّافِعُ، وَالرِّيُّ النَّاقِعُ، وَالْعِصْمَةُ لِلْمُتَمَسِّكِ، وَالنَّجَاةُ لَلْمُتَعَلِّقِ، لاَ يَعْوَجُّ فَيُقَامَ، وَلاَ يَزِيغُ فَيُسْتَعْتَبَ، وَلاَ تُخْلِقُهُ كَثْرَةُ الرَّدِّ، وَوُلُوجُ السَّمْعِ، مَنْ قَالَ بِهِ صَدَقَ، وَمَنْ عَمِلَ بِهِ سَبَقَ. A man stood up and said: O Amir al-mu'minin, tell us about this disturbance and whether you enquired about it from the Holy Prophet.
وقام إليه (عليه السلام) رجل فقال: أخبرنا عن الفتنة، وهل سألت عنها رسول الله (صلى الله عليه وآله)؟ Thereupon Amir al-mu'minin said : When Allah, the Glorified sent down the verse: Alif lam mim. What! Do people imagine that they will be let off on (their) saying: "We believe!" and they will not be tried?