The Peak of Eloquence · Hadith 1389 (#Passage #198)

أَمَّا بَعْدُ، فَقَدْ بَعَثْتُ إِلَيْكُمْ عَبْداً مِنْ عِبَادِ اللهِ، لَا يَنَامُ أَيَّامَ الخَوْفِ، وَلَا يَنْكُلُ عَنِ الْأَعْدَاءِ سَاعَاتِ الرَّوْعِ، أَشَدَّ عَلَى الْفُجَّارِ مِنْ حَرَيقِ النَّارِ، وَهُوَ مَالِكُ بْنُ الْحَارِثِ أَخُو مَذْحِجٍ،

Now, I have sent to you a man from among the servants of Allāh who allows himself no sleep in days of danger, nor does he shrink from the enemy at critical moments. He is severer on the wicked than a blazing fire. He is Mālik ibn al-Ḥārith, our brother from (the tribe of) Madhḥij.

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).