The document discusses a supplication called Dua-e-Ahad that is recited for Imam Mahdi. It states that Imam Sadiq narrated that anyone who recites this supplication for 40 mornings will be counted among the helpers of Imam Mahdi. If they die before his reappearance, Allah will raise them from the grave so they can assist him. For every word recited, the person will gain 1000 good deeds and 1000 sins will be erased. The supplication renews the covenant of allegiance to Imam Mahdi and ensures the reciter is under his leadership. It asks Allah to include the reciter among Mahdi's helpers and grant martyrdom in his presence, or raise