I met 'Umar bin al-Khattab and he said: Who are you? I said: Masrooq bin al-Ajda'. 'Umar said: I heard the Messenger of Allah ﷺ saying, ʿAl- Ajda' is a devil [i.e. the word Al-Ajda' has a bad meaning]; rather you are Masrooq bin ‘Abdur-Rahman. 'Amir said: I saw his name written in the Deewan; Masrooq bin ‘Abdur-Rahman. I said: What is this? He said. This is what ‘Umar ؓ called me.
سَمِعْتُ رَسُولَ اللهِ ﷺيَقُولُ الْأَجْدَعُ شَيْطَانٌ وَلَكِنَّكَ مَسْرُوقُ بْنُ عَبْدِ الرَّحْمَنِ قَالَ عَامِرٌ فَرَأَيْتُهُ فِي الدِّيوَانِ مَكْتُوبًا مَسْرُوقُ بْنُ عَبْدِ الرَّحْمَنِ فَقُلْتُ مَا هَذَا؟ فَقَالَ هَكَذَا سَمَّانِي عُمَرُ