وَعَنْ أَبِي جُحَيْفَةَ - رضى الله عنه - قَالَ: { رَأَيْتُ بِلَالاً يُؤَذِّنُ وَأَتَتَبَّعُ فَاهُ, هَاهُنَا وَهَاهُنَا, وَإِصْبَعَاهُ فِي أُذُنَيْهِ } رَوَاهُ أَحْمَدُ, وَاَلتِّرْمِذِيُّ وَصَحَّحَهُ 1 .1 - صحيح. رواه أحمد (4/308-309)، والترمذي (197)، وقال الترمذي: "حديث حسن صحيح".
I saw Bilal calling for prayer and I would follow (looking at) his mouth (as he turned it) this (right) side and that (left) side with his fingers in his ears.