407
Hasan Sahih+3
(Sabrah bin Ma'bad al-Juhni) narrated that:Allah's Messenger (S) said: "Teach the boy Salat when he is seven years old, and beat him (if he does not pray) when he is ten
Hasan SahihAhmad Muhammad Shakir
Hasan SahihAl-Albani
Jami At TirmidhiHadith 407