Talmud zu Mischlej 10:12

BARAITHA.⁴⁶K 8. R. Nehemiah said: Because of the sin of causeless hatred a man’s wife suffers miscarriage, his children die young, and contention is rife in his house.
GEMARA. It is quite reasonable [to say] that causeless hatred brings about strife, as it is written, Hatred stirreth up strifes;⁴⁷Prov. 10, 12. but whence do we learn [that it causes] miscarriage? As it is written, In vain have I smitten your children,⁴⁸Jer. 2, 30. [in vain meaning] for causeless strifes.