There Are Always Harsh Customs in Hard Lands
…The Islamic geographer and scholar Yaqut (d. 1229 [C.E.]) tells a distinctly uncharming story of life in [the Mongolian] steppe lands.
If a man begets a son, he would bring him up and provide for him and take care of him until he reaches puberty. Then he would hand him a bow and arrows and drive him from the family home crying, ‘Go fend for yourself!‘ Henceforward he would treat him both as a stranger and a foreigner. There are also among these people those who will sell their sons and daughters.
There are always harsh customs in hard lands…. Surplus children were an encumbrance to the survival of the family unit and the boys might become a possible challenge to the authority of the paterfamilias. Indeed, one way of reading Yaqut’s passage is that if you are prepared to kick your adolescent son out of your home and never acknowledge his existence thereafter, you may as well receive some profit from his departure and from your investment in his young life….
— Knights of Islam, Chapter 1