This is a reference to the common Medinan practice of women asking for their dowers before moving to the matrimonial home. Hossein Modarressi cites this reference to clarify the context surrounding Jaʿfar al-Ṣādiq's view with respect to when a wife may no longer be entitled to request her dower (in Kulaynī, Kāfī, 5:385-86).
This source is part of the Online Companion to Hossein Modarressi, Text and Interpretation: Imam Jaʿfar al-Ṣādiq and His Legacy in Islamic Law (Harvard University Press, 2022).