Sunan Ibn Majah — Establishing the Prayer and the Sunnah Regarding Them — Hadith No: 978
Translation
It was narrated from Abu Sa’eed that the Messenger of Allah (ﷺ) saw that some of his Companions tended to stand in the rear, so he said:“Come forward and follow me, and let those who are behind you follow your lead. If people continue to lag behind, Allah will put them back.”