What is the ruling on birth control and limiting oneself to a certain number of children (daughters) for the purpose of focusing on their upbringing, bearing in mind that sustenance is not the motivating factor?

It is not permissible to limit births to a specific number and suffice with it under the pretext of raising children, as it contradicts the general religious texts that encourage procreation. However, delaying childbirth for a certain period to care for the previous child is permissible.