Sunan Ibn Majah 725
سنن ابن ماجه#725SahihIt was narrated that 'Esa bin Talhah said:"I heard Mu'awiyah bin Abu Sufyan say that Messenger of Allah said: "The Mu'adh-dhin will have the longest necks of all people on the Day of Resurrection
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 3:20