Answered by Shaykh Faraz Rabbani
Question: Is it permissible to use a feather duster made with real ostrich feathers? Are the
feathers pure (tahir) in the Hanafi school of jurisprudence (madhhab) if one does not know
if the feathers are taken from a live or already slaughtered bird?
Walaikum assalam wa rahmatullah,
I pray that this finds you well, and in the best of health and spirits. May Allah grant you all good
and success in this life and the next.
In the Hanafi school, feathers of any animal are pure, regardless of whether they were plucked
when the animal was alive or dead. [Shurunbulali, Maraqi al-Falah]
And Allah alone gives success.