Abbad bin Tamim (may Allah have mercy on him) narrates from his uncle Sayyiduna Abdullah bin Zayd (may Allah be pleased with him) (the one who was shown the adhan in a dream) that the Messenger of Allah (peace and blessings be upon him) went out to the prayer ground, and he narrated the like of the previous hadith.
Imam al-Bukhari (may Allah have mercy on him) said that this is not the Abdullah who was shown the adhan; rather, this is Sayyiduna Abdullah bin Zayd bin Asim al-Mazini (may Allah be pleased with him).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب صلاة الاستسقاء / 6385