Sunan an-Nasa'i 795
سنن النسائي#795SahihIt was narrated from Abu Sa'eed that the Messenger of Allah (ﷺ) saw that 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, the Mighty and Sublime, will put them back
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 10:19