Undoubtedly, research on the mothers of the infallible Imāms (as) is necessary and closely linked to Ahl al-Bayt's biography (as). Not only did their enemies seek to smear and distort the biography of the Holy Imāms (as), but they also worked to do the same to their mothers, whose biographies have been subject to many distortions, alterations, and manipulations.

Perhaps the biography of Lady Narjis (as), the mother of Imām Muḥammad al-Mahdī (aj), is surrounded by significant ambiguity and confusion, as contradictions and differences are ingrained in all the matters related to her such that even the truth of her name is muddled. This led some transgressors to link her with different figures, and some even crossed the lines of decency and attributed to her that which a believer must not mention due to some things narrated about her life.

Therefore, this small book is my attempt to gather all that is narrated about this virtuous lady (as) from the books of ḥadīth, history, and biographies and thus eliminate the ambiguity that has surrounded her so that the reader can acquire an image of her (as) life and, more importantly, her role in the al-Mahdī movement, particularly in the minor occultation of the Imām of the Time (aj).