When all three of them (the wives of Maharaja Bharata) bore children who did not resemble the King (Maharaja Bharata), these wives thought that he would consider them unfaithful queens and reject them, and therefore they killed their own sons

Expressions researched:
"Mahārāja Bharata had three pleasing wives, who were daughters of the King of Vidarbha. When all three of them bore children who did not resemble the King, these wives thought that he would consider them unfaithful queens and reject them, and therefore they killed their own sons"

SB Canto 9

O King Parīkṣit, Mahārāja Bharata had three pleasing wives, who were daughters of the King of Vidarbha. When all three of them bore children who did not resemble the King, these wives thought that he would consider them unfaithful queens and reject them, and therefore they killed their own sons.

SB 9.20.34, Translation:

O King Parīkṣit, Mahārāja Bharata had three pleasing wives, who were daughters of the King of Vidarbha. When all three of them bore children who did not resemble the King, these wives thought that he would consider them unfaithful queens and reject them, and therefore they killed their own sons.