Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The mare in a dream is a free, noble woman. Whoever rides her will marry a righteous woman. Whoever dismounts from her will separate from her. Her death indicates the wife's death.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The mare indicates a wife, a house, or a partner. A beautiful mare indicates a world approaching with goodness.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The mare is interpreted as a woman. Whoever sees that he owns a mare will receive good from a woman.