Hadith 53
وَبِهَذَا الْإِسْنَادِ، عَنْ رَسُولِ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ قَالَ: ((لَا تَقُومُ السَّاعَةُ عَلَى أَحَدٍ يَقُولُ لَا إِلَهَ إِلَّا اللَّهُ أَوْ يَأْمُرُ بِالْمَعْرُوفِ أَوْ يَنْهَى عَنِ الْمُنْكَرِ)) .
With this same chain, it is narrated that the Messenger of Allah (peace and blessings be upon him) said: "The Hour will not be established as long as there remains a single man who professes 'La ilaha illallah' (There is no god but Allah), or who enjoins good and forbids evil."
Hadith Reference مسند اسحاق بن راهويه / كتاب الايمان / 53
Hadith Takhrij «ابن عدي ضعفا : 2092/6»