Is it permissible to issue a fatwa based on general Islamic principles and legal evidence, such as the hadith "There shall be no harm nor reciprocating harm," and the interpretations of scholars thereof, to derive worldly rulings like the impermissibility of disturbing neighbors with loud singing?

This answer discusses the regulations governing the issuance of fatwas, emphasizing that the derivation of Islamic rulings is the prerogative of scholars deeply rooted in knowledge, not that of the layperson or the beginner student of knowledge. This is because the latter may err in applying rules or fail to recognize their conflict with other rules. Therefore, the layperson must inquire of the people of knowledge regarding what is unclear to them and present to them what they have understood from the texts for correction or affirmation, in accordance with the Almighty's saying: "So ask the people of the message if you do not know."