الكافي- ط الاسلامية, volume 3, page 409

5. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Mahbub from Musadif who has said the following: “Abu ‘Abd Allah (a.s.), about a man who bundles up his hairs on the top of his head, has said, ‘He is required to perform his Salah (prayer) again.’” (Fatwa best explains this Hadith.)

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

1. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Hammad from al-Halabiy who has said the following: “Abu ’Abd Allah (a.s.), has said, ‘We instruct our children to perform Salah (prayer) when they are five years old. Instruct your children to perform Salah (prayer) when they are seven years old. We instruct our children to fast when they are seven years old if they can endure fasting even up to midday, or more than this or less. When thirst bothers them and hunger they discontinue the fast. This is to familiarize them with fasting to build their endurance to fast. So instruct your children to fast when they are nine years old and for as much of the day they can fast. When thirst bothers them, then you should allow them to discontinue their fast.’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

2. Muhammad ibn ’Isma‘il has narrated from al-Fadl ibn Shadhan from Hammad ibn ‘Isa from Rib‘i ibn ‘Abd Allah from Fudayl ibn Yasar who has said the following: “Ali ibn al-Husayn (a.s.), would instruct children to perform Salah (prayer) of al-Maghrib and al-‘Isha’ soon, one after the other, saying that it is better for them than falling asleep.”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

3. Al-Husayn ibn Muhammad has narrated from Mu‘alla’ ibn Muhammad from al-Washsha’ from al-Mufaddal ibn Salih from Jabir who has said the following: “I once asked abu Ja‘far (a.s.), about children when they line up for obligatory Salah (prayer). He (the Imam) said, ‘Do not push them back from obligatory but separate them from each other (boys from girls).’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.