We were with the Messenger of Allah ﷺ when Bilal stood and called the adhan. When he finished, the Messenger of Allah ﷺ said, "Whoever says the like of this with certainty will enter Paradise."
أخبرنا محمد بن سلمة قال حدثنا ابن وهب عن عمرو بن الحارث أن بكير بن الأشج حدثه أن علي بن خالد الزرقي حدثه أن النضر بن سفيان حدثه أنه سمع
كنا مع رسول الله ﷺ فقام بلال ينادي فلما سكت قال رسول الله ﷺ من قال مثل هذا يقينا دخل الجنة
[Its chain is hasan] Ahmad reported it: 2/352, from the hadith of Abdullah bin Wahb, by this chain, and it is in Kubra, no. 1641. Ibn Hibban graded it sahih, no. 294, as did Hakim, 1/204, though Nadr bin Sufyan was omitted from his chain, and Dhahabi agreed with him.Nadr bin Sufyan was graded trustworthy by Dhahabi and Ibn Hibban, so his hadith does not fall below the level of hasan.