Sunan an-Nasa'i 643

Arabic

أَخْبَرَنَا مَحْمُودُ بْنُ غَيْلاَنَ، قَالَ حَدَّثَنَا وَكِيعٌ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ عَوْنِ بْنِ أَبِي جُحَيْفَةَ، عَنْ أَبِيهِ، قَالَ أَتَيْتُ النَّبِيَّ صلى الله عليه وسلم فَخَرَجَ بِلاَلٌ فَأَذَّنَ فَجَعَلَ يَقُولُ فِي أَذَانِهِ هَكَذَا يَنْحَرِفُ يَمِينًا وَشِمَالاً ‏.‏

Translation

It was narrated from 'Awn bin Abi Juhaifah that his father said:"I came to the Prophet (S.A.W) and Bilal came out and called the Adhan and he started doing like this in his Adhan, turning to his right and left

Authenticity

Sahih · Abu Ghuddah

Reference