عَنِ ابْنِ مَسْعُودٍ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ إِنَّ مِنْ أَشْرَاطِ السَّاعَةِ أَنْ يُسَلِّمَ الرَّجُلُ عَلَى الرَّجُلِ لَا يُسَلِّمُ عَلَيْهِ إِلَّا لِلْمَعْرِفَةِ
Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: Among the signs of the Hour is that a man will greet another man with Salam only because of acquaintance.