Ritual cleaning is an integral part of the sustenance of halal integrity in any set-up of halal industries. It forms the basic but very important part in cleaning procedure for specific types of najs. Theoretical and practical understanding on how to conduct ritual cleaning will be very important especially for operators and halal management team. While the principles of ritual cleaning is similar across the industries, the cleaning modalities for certain industries such as pharmaceutical and food manufacturing may requires different treatment owing to the nature of the machineries or equipment.
- Garis Panduan Sertu Menurut Perspektif Islam: Muzakarah Jawatankuasa Fatwa MKI kali Ke-96, 13-15 Oktober 2011.
- Fatwa Muzakarah Jawatankuasa Fatwa Majlis Kebangsaan Bagi Hal Ehwal Ugama Islam Malaysia (MKI)
- Malaysia Halal Certification Manual Procedure 2014 (3rd Revision)