The court was hearing a petition filed by Awaaz Foundation and others taking exception to substantial noise pollution caused during festivals.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/breach-noise-pollution-rules-bombay-hc-orders-mumbai-police-file-affidavit
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/maharashtra
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noise-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/festival
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noise-rules-2000
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment