Although the Queen had no son, after eating that food, which had the power to produce a male child, she became pregnant by her husband, and in due course of time she gave birth to a son

Expressions researched:
"Although the Queen had no son, after eating that food, which had the power to produce a male child, she became pregnant by her husband, and in due course of time she gave birth to a son"

Srimad-Bhagavatam

SB Canto 4

Although the Queen had no son, after eating that food, which had the power to produce a male child, she became pregnant by her husband, and in due course of time she gave birth to a son.

SB 4.13.38, Translation and Purport

Although the Queen had no son, after eating that food, which had the power to produce a male child, she became pregnant by her husband, and in due course of time she gave birth to a son.

Among the ten kinds of purificatory processes, one is puṁ-savanam, in which the wife is offered some prasāda, or remnants of foodstuff offered to Lord Viṣṇu, so that after sexual intercourse with her husband she may conceive a child.