Jabir (May Allah be pleased with him) reported:
The Messenger of Allah ﷺ used to lag behind while travelling and urge the weak to walk quickly. He used to take up someone behind him and make supplication for him.

[Abu Dawud].

وعنه قال: كان رسول الله ﷺ يتخلف في المسير، فيزجي الضعيف ويردف ويدعو له، ((رواه أبو داود بإسناد حسن)).