The Prophet (ﷺ) said: When an infant has raised its voice (and then dies), it will be treated as an heir.
Sunan Abi Dawud Book 19, Hadith 36
← Previous Hadith The Messenger of Allah (ﷺ) forbade selling or giving away the right to inheritance by a manumitted slave.

Sunan Abi Dawud Book 19, Hadith 35 Next Hadith → To those also, to whom your right hand was pledged, give their due portion. A man made an agreement with another man (in early days of Islam), and there was no relationship between the ; one of them inherited from the other. The following verse of Surat Al-Anfal abrogated it: "But kindred by blood have prior right against each other."

Sunan Abi Dawud Book 19, Hadith 37