[Machine] The Prophet ﷺ would not appoint a governor until he made him familiar with the region by accompanying and showing him the way, even pouring some drops into his right ear.
«كَانَ رَسُولُ اللهِ ﷺ لَا يُوَلِّي وَالِيًا حَتَّى يُعَمِّمَهُ وَيُرْخِيَ لَهَا عَذَبَةً مِنْ جَانِبِ الْأَيْمَنِ نَحْوَ الْأُذُنِ»