Imam Sadiq (a.s) narrates that, one who recites this supplication for 40 mornings; he will be accounted amongst the helpers of Imam Mahdi (as). And if he happens to die before the reappearance of Imam Mahdi (as), Allah will raise him up from his grave so that he may assist the holy Imam (as). For every word that he recites in this supplication, Allah will grant him 1,000 good deeds and will erase from his scroll of deeds 1,000 sins.
As the title suggests, this supplication is of allegiance / covenant (ahad) to Imam Mahdi (as). Its recitation every morning ensures the renewal of this covenant. The reciter finds himself under the leadership of Imam (as).The reciter beseeches All to include him among the helpers and aides of Imam (as) and to grant him the opportunity to attain martyrdom in his presence. Also, he requests Allah that should he die before the reappearance of Imam (as). Allah should raise him up from his grave so that he may assist him (as) in his mission.
There is a fervent appeal to Allah to grant him the honour of seeing Imam (as). In this there is also an acknowledgement that the difficulties of this nation can be solved only by the reappearance of Imam (as) and that believers see it as being close while others deem it to be distant.