Bulugh al-Maram
Book 2, Hadith 50
Arabic hadith text
وَفِي رِوَايَةِ لَهُ: { وَلَمْ يُنَادِ فِي وَاحِدَةٍ مِنْهُمَا } .
Translation
And in another narration he reported
The Adhan was not announced for any one of them.