In some Hadiths, there are a few aligned phrases describing the era of "the End of Time". The reports of the late Ṣaffār and Kulaynī are such that understanding their exact meanings requires paying more attention to some points. Based on this, in this paper, we will examine and analyze the document, vocabulary, and meanings of this narration, especially the meaning of the word   "خرَجَ" (the rising of Imam Mahdi by the will of Allah). According to the chain of transmitters, the mentioned Hadith has two authentic or at least acceptable sources. In addition, some factors such as its repetition in the earlier sources and later books and also the non-contradiction of its content with the Qur'an and the Sunnah, strengthen the certainty of issuing this narration from the side of the infallible Imams.
The present article is written by the descriptive-analytical method and using library resources. Studies have tended to show that the Imams were careful to choose the proper words for conveying the meaning; therefore, the word (خُروج) Arising used in this narration is different from two words Appearance and Uprising, in such a way that the appearance of Imam Mahdi (pbuh), unlike his arising, is a rapid thing. It is also possible to distinguish between the Imam’s appearance and arising (as the divine subject) with his uprising (as a social matter). Another difference is that the word (خُروج) Arising is specifically linked to “divine providence” i.e. the time of Appearance is determined by God’s existential will. Then Allah orders the Imam for the appearance, and this order is an example of God’s legislative will. Based on this, it can be said that both the appearance of the Imam and the time of Appearance will happen only by Allah’s will.