Answered by: Molana Eunus Ali
Could We eat chiken? (jiski khuraq me pig Fat pari hoti he?)
بسم الله الرحمن الرحيم
It is narrated by Abdullah ibn Umar (may Allah be pleased with him):The Messenger of Allah (ﷺ) prohibited eating the animal which feeds on filth and drinking its milk.
The scholars have stated that the consumption of any animal nourished by impure and filth is disliked (makruh).
They have advised that if the signs of the filth are apparent in the flesh or the meat it is recommended that the specific animal is separated and fed pure food until the reminisce of the filth is no longer present, it will no longer be considered to be disliked.
In regards to your question, it will be disliked to consume chickens that have been nourished with food containing pig fat; rather it should be fed pure food for a few days before being slaughtered for consumption.
Only Allah knows best
Written by Molana Eunus Ali
Darul Ifta Birmingham
Checked and approved by Mufti Mohammed Tosir Miah
This answer was collected from DarulIftaBirmingham.co.uk, which is run under the supervision of Mufti Mohammed Tosir Miah from the United Kingdom.