Mahdi reports that Sayyiduna Ibn Mas'ud (may Allah be pleased with him) said: "O Mahdi, how will you be when your best people are overpowered, and your young ones or your wicked ones are appointed as rulers over you, and the prayer is performed outside its proper time?" I said: I do not know. He said: "Do not be a tax collector, nor an 'arif (government overseer), nor a policeman, nor a courier, and pray the prayer at its proper time."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 9465