A man reported,

The Prophet ﷺ was concerned about the prayer and how to gather the people for it. It was suggested to him, "Raise a banner when the time of prayer arrives, and when the people see it, they will inform one another." But this did not please him.Then the qun was mentioned to him, meaning the horn. Ziyad said, it was the horn of the Jews. This did not please him either, and he said, "It is from the practice of the Jews."Then the bell was mentioned to him, and he said, "It is from the practice of the Christians."So Abdullah bin Zayd bin Abd Rabbih departed, sharing the concern of the Messenger of Allah ﷺ, and he was shown the call to prayer in his sleep. The next morning he came to the Messenger of Allah ﷺ and informed him, saying, "Messenger of Allah, while I was between sleeping and waking, someone came to me and showed me the call to prayer."Now Umar bin Khattab had seen it before this but had kept it to himself for twenty days. Then he informed the Prophet ﷺ, who said to him, "What kept you from telling me?"He replied, "Abdullah bin Zayd got to it before me, so I felt embarrassed."The Messenger of Allah ﷺ said, "Bilal, get up and do whatever Abdullah bin Zayd instructs you." So Bilal made the call to prayer.Abu Bishr said, Abu Umayr informed me that the Ansar claim that had Abdullah bin Zayd not been ill that day, the Messenger of Allah ﷺ would have made him the muezzin.

عن أبي عمير بن أنس، عن عمومة له من الأنصار، قال

اهتم النبي ﷺ للصلاة، كيف يجمع الناس لها؟ فقيل له: انصب راية عند حضور الصلاة، فإذا رأوها آذن بعضهم بعضا، فلم يعجبه ذلك، قال: فذكر له القنع- يعني الشبور- وقال زياد: شبور اليهود، فلم يعجبه ذلك، وقال: هو من أمر اليهود، قال: فذكر له الناقوس، فقال: هو من أمر النصاري فانصرف عبد الله بن زيد[ بن عبد ربه] وهو مهتم لهم رسول الله ﷺ فأري الأذان في منامه، قال: فغدا على رسول الله ﷺ فأخبره فقال: يا رسول الله إني لبين نائم ويقظان إذ أتاني آت فأراني الأذان، قال: وكان عمر بن الخطاب رضي الله عنه! قد رآه قبل ذلك فكتمه عشرين يوما، قال: ثم أخبر النبي ﷺ، فقال له: ما منعك أن تخبرني؟ فقال: سبقني عبد الله بن زيد، فاستحيت، فقال رسول الله ﷺ: يا بلال، قم فانظر ما يأمرك به عبد الله بن زيد فافعله قال: فأذن بلال، قال أبو بشر: فأخبرني أبو عمير أن الأنصار تزعم أن عبد الله بن زيد لو لا أنه كان يومئذ مريضا لجعله رسول الله ﷺ مؤذنا.