The wife of the Prophet, God bless him and grant him peace, the daughter of Umar ibn al-Khattab, may God be pleased with her. Seeing her in a dream signifies something disliked.
Whoever among men sees one of the wives of the Prophet, God bless him and grant him peace, other than her, while he is unmarried, will marry a righteous woman. Likewise, if a woman sees one of them, seeing her signifies a righteous husband who will provide for her. This was mentioned earlier under 'Wives of the Prophet' in the chapter of Alif.