Narrated Muadh ibn Abdullah ibn Khubayb al-Juhani: Hisham ibn Saad reported: We entered upon Muadh ibn Abdullah ibn Khubayb al-Juhani. He said to his wife: When (at what age) should a boy pray? She replied: Some person of us reported: The Messenger of Allah ﷺ was asked about it; he said: When a boy distinguishes right hand from the left hand, then command him to pray.
Explanation & Benefits
Shaykh Umar Farooq Saeedi
497. Commentary:
At the age of seven, a child attains sufficient maturity in understanding. Effort regarding prayer should be started with him even before this.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 497