(14) باب سُكُوتِ الإِمَامِ بَعْدَ افْتِتَاحِهِ الصَّلاَةَ
It was narrated from Abu Hurairah that:
The Messenger of Allah (ﷺ) used to pause briefly when he had started to pray.
Reference: Sunan an-Nasa'i 894
In-book reference: Book 11, Hadith 19
English translation: Vol. 2, Book 11, Hadith 895