If one has already read Asr salah then to read it behind husband again
In the name of Allah, the most Beneficent, the most Merciful.
In the Hanafi Fiqh, if one reads the fardh prayers individually and then the call for congregation is made, then it is only permissible to join the congregation for the Zuhr and Isha salah with the intention of nafl. It will not be permissible to join for the Fajr and Asr salah as it is Makruh Tahrimi to read optional prayers after the Fajr and Asr salah and the salah which one has read individually will be considered as fardh and the one being prayed in congregation as optional. Maghrib salah consists of three rakats and there are no three rakats optional salah. (Dars Tirmizi p.482 v.1)
Only Allah Knows Best
Mohammed Tosir Miah
Darul Ifta Birmingham