"Qais bin Sa'd used to be, to the Prophet ﷺ, in the position of the head of police for a ruler." (One of the narrators) Al-Ansari said: "That is: Due to his affairs that he takes charge of." (Using translation from Tirmidhī 3850)
كَانَ قَيْسُ بْنُ سَعْدٍ مِنْ رَسُولِ اللهِ ﷺ بِمَنْزِلَةِ صَاحِبِ الشَّرْطِ مِنَ الْأَمِيرِ يَعْنِي يَنْظُرُ فِي أُمُورِهِ