Sunan Abi Dawud 495
سنن أبي داود#495SahihNarrated Abdullah ibn Amr ibn al-'As: The Messenger of Allah (ﷺ) said: Command your children to pray when they become seven years old, and beat them for it (prayer) when they become ten years old; and arrange their beds (to sleep) separately
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniHasan Sahih
Muhammad Muhyi Al-Din Abdul HamidHasan Sahih
Zubair Ali ZaiSahih
In-book reference: 2:105