Does sexual intercourse with one of the wives constitute a selection?
Chapter on Marriage of Polytheists
Al-Mughni
Book of Marriage
Primary text
If a man has intercourse with one of his wives, it constitutes a selection for her, according to the primary analogy of the Madhhab. This is because intercourse is only permissible within ownership (milk), thus indicating selection, similar to intercourse with a sold female slave under an option to rescind (shart al-khiyar), or intercourse with a revocably divorced wife (raj'iyyah), which also implies selection.