[Machine] Peace be upon you, Abu Abdurrahman. Abdulla replied while he was in a state of prostration, "May Allah and His Messenger be truthful. When he finished, some people asked him, 'Why did you say, 'May Allah and His Messenger be truthful' when the man greeted you?' He replied, 'I heard the Messenger of Allah ﷺ saying, 'One of the signs of the Hour is that when the greeting is given to a person on whom it is not due, he says, 'May Allah and His Messenger be truthful.'"
السَّلَامُ عَلَيْكَ يَا أَبَا عَبْدِ الرَّحْمَنِ فَقَالَ عَبْدُ اللهِ وَهُوَ رَاكِعٌ صَدَقَ اللهُ وَرَسُولُهُ فَلَمَّا انْصَرَفَ سَأَلَهُ بَعْضُ الْقَوْمِ لِمَ قُلْتَ حِينَ سَلَّمَ عَلَيْكَ الرَّجُلُ صَدَقَ اللهُ وَرَسُولُهُ؟ قَالَ إِنِّي سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ إِنَّ مِنْ أَشْرَاطِ السَّاعَةِ إِذَا كَانَتِ التَّحِيَّةُ عَلَى الْمَعْرِفَةِ