It has been stated in traditions that whosoever recites this hadith for forty days in the morning, he/she will be one of the companions of Imam Zaman (a.s.) and …[1]. Conclusion: Dua Ahd needs to be read in the morning, and the best time to read it is after the Sabah (morning) prayer. In fiqh, the time between “the true dawn” (adhan of morning prayer) and sunrise is considered the morning, although society considers one to two hours after sunrise as part of the morning as well. Also, these hadiths are apparently saying that this dua must be read in forty consecutive mornings. Of course, reading this dua is originally mustahabb and not wajib.

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Dua ahd and its recitation time.

Dua ahd.