[Machine] The Prophet ﷺ used to apply kohl in his right eye first, then in his left eye twice, making it an odd number.
أَنَّ رَسُولَ اللهِ ﷺ «كَانَ إِذَا اكْتَحَلَ جَعَلَ فِي الْعَيْنِ الْيُمْنَى ثَلَاثًا وَفِي الْيُسْرَى مِزْوَدَيْنِ فَجَعَلَهَا وِتْرًا»