دَخَلَ رَسُولُ اللَّهِ ص الْمَسْجِدَ فَإِذَا جَمَاعَةٌ قَدْ أَطَافُوا بِرَجُلٍ فَقَالَ مَا هَذَا فَقِيلَ عَلَّامَةٌ فَقَالَ وَ مَا الْعَلَّامَةُ فَقَالُوا لَهُ أَعْلَمُ النَّاسِ بِأَنْسَابِ الْعَرَبِ وَ وَقَائِعِهَا وَ أَيَّامِ الْجَاهِلِيَّةِ وَ الْأَشْعَارِ الْعَرَبِيَّةِ قَالَ فَقَالَ النَّبِيُّ ص ذَاكَ عِلْمٌ لَا يَضُرُّ مَنْ جَهِلَهُ وَ لَا يَنْفَعُ مَنْ عَلِمَهُ ثُمَّ قَالَ النَّبِيُّ ص إِنَّمَا الْعِلْمُ ثَلَا
“Once Rasulullah (sw) entered the Mosque and found a group of people gathered around a man. He asked, 'Who is he?'. It was said that he was a Allamah. He then asked them, 'What is that?'. They replied that he is the most learned man about the genealogy, the chronology, and the history of the pre-Islamic days of darknes