Sunan Abi Dawud 494
سنن أبي داود#494Sahihحَدَّثَنَا مُحَمَّدُ بْنُ عِيسَى، - يَعْنِي ابْنَ الطَّبَّاعِ - حَدَّثَنَا إِبْرَاهِيمُ بْنُ سَعْدٍ، عَنْ عَبْدِ الْمَلِكِ بْنِ الرَّبِيعِ بْنِ سَبْرَةَ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " مُرُوا الصَّبِيَّ بِالصَّلاَةِ إِذَا بَلَغَ سَبْعَ سِنِينَ وَإِذَا بَلَغَ عَشْرَ سِنِينَ فَاضْرِبُوهُ عَلَيْهَا " .
Narrated As-Saburah: The Prophet (ﷺ) said: Command a boy to pray when he reaches the age of seven years. When he becomes ten years old, then beat him for prayer
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 2:104