[Machine] Mohammed ibn Salam, Amr ibn Ma'di Karib, had experiences in the pre-Islamic era. He embraced Islam when it reached the Prophet ﷺ and Umar ibn Al-Khattab directed him to Saad ibn Abi Waqqas in Al-Qadisiyah. He faced a favorable test there. Umar wrote to Saad ibn Abi Waqqas asking for support from two thousand men, including Amr ibn Ma'di Karib and Talhah ibn Khuwailid, also known as Talhah Al-Asadi. He consulted them on matters of war and did not favor either of them.  

مُحَمَّدُ بْنُ سَلَّامٍ عَمْرُو بْنُ مَعْدِي كَرِبَ لَهُ فِي الْجَاهِلِيَّةِ وَقَائِعٌ وَقَدْ أَدْرَكَ الْإِسْلَامَ قَدِمَ عَلَى النَّبِيِّ ﷺ وَوَجَّهَهُ عُمَرُ بْنُ الْخَطَّابِ إِلَى سَعْدِ بْنِ أَبِي وَقَّاصٍ ؓ إِلَى الْقَادِسِيَّةِ وَكَانَ لَهُ هُنَاكَ بَلَاءٌ حَسَنٌ كَتَبَ عُمَرُ إِلَى سَعْدِ بْنِ أَبِي وَقَّاصٍ بِأَلْفَي رَجُلٍ عَمْرُو بْنُ مَعْدِي كَرِبَ وَطَلْحَةُ بْنُ خُوَيْلِدٍ وَهُوَ طَلْحَةُ الْأَسَدِيُّ فَشَاوِرْهُمَا فِي الْحَرْبِ وَلَا تُوَلِّهِمَا شَيْئًا