Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The horse in a dream is honor, prestige, and authority. Riding a horse is attaining honor, prestige, and a high position. Whoever owns a horse will gain goodness, benefit, and abundance in sustenance. A wild, disobedient horse indicates a man who follows his desires and commits sins. The death of a horse indicates the death of its owner or the loss of his blessings.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The horse indicates travel, a partner, or prestige. A white (ash-hab) horse is a religious man of dignity. A black horse is a man of wealth and leadership. A red horse is a man of war and strife. Riding a horse without a saddle indicates marriage to a lowly woman or a journey filled with hardship.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The horse is interpreted as prestige, status, and honor. Riding it with full armor indicates overpowering enemies and achieving wishes. Whoever sees himself fall from a horse will lose his position or be weakened in his state. The horse's tail indicates the man's followers and supporters.