Axiomatic
Srimad-Bhagavatam
SB Canto 4
SB 4.13.39, Purport:
The child's mother, Sunīthā, was the daughter of death personified. Generally the daughter receives the qualifications of her father, and the son acquires those of the mother. So, according to the axiomatic truth that things equal to the same thing are equal to one another, the child born of King Aṅga became the follower of his maternal grandfather. According to smṛti-śāstra, a child generally follows the principles of his maternal uncle's house. Narāṇāṁ mātula-karma means that a child generally follows the qualities of his maternal family. If the maternal family is very corrupt or sinful, the child, even though born of a good father, becomes a victim of the maternal family.