The virtue of disciplining children

Ayyub bin Musa bin Amr bin Sa'id bin al-As narrates from his father, from his grandfather, that the Messenger of Allah (peace and blessings be upon him) said: "No father has given his child a gift better than good manners and conduct."
This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyiduna Jabir bin Samurah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "By Allah, for one of you to give his child a good upbringing and teach him manners is better for him than giving half a sa' (of grain) in charity every day."

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When Allah, the Mighty and Majestic, created Adam (peace be upon him) and breathed the soul into him, he sneezed and said: 'Alhamdu lillah' (All praise is for Allah). So he praised Allah by Allah's leave, and then his Lord said to him: 'O Adam, may your Lord have mercy on you.'"
This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyiduna Anas (may Allah be pleased with him) that when the soul was breathed into Adam (peace be upon him) and it reached his nostrils, he sneezed and said: 'Alhamdu lillahi rabbil-alamin' (All praise is for Allah, the Lord of the worlds). Then Allah Almighty said: "May Allah have mercy on you."
This hadith has a sahih (authentic) chain of narration on the condition of Imam Muslim; even though it is mawquf (stopping at the Companion), its chain is entirely sahih.