What is the ruling on saying (Indeed, You do not break Your promise) at the end of the supplication after the adhan?

Question : “Indeed, You do not break Your promise.” A man says this at the end of the supplication after the adhan. Is it reported or not? To the best of my knowledge, it is weak.

Answer : Yes, the correct view is that it is not weak, because its narrator, Muhammad ibn Awf, is trustworthy, and because this is part of the supplication of the believers, as in the end of Surat al-Imran: The correct position is that the hadith is authentic, and that this is the practice of the believers in their supplication. It should be known that if a narrator is unique in a report and does not contradict others, that does not mean it is anomalous. Otherwise, one might say that even if a narrator is trustworthy, he is anomalous, because an anomalous report is one that contradicts a more reliable narrator, either in number or in strength of memorization. So we say that a report is not judged anomalous unless reconciliation is impossible and it is contradictory. But if it is not contradictory, then the one who has memorized it is a proof against the one who has not.