How are the opinions of those who believe that the prohibition of musical instruments is not based on definitive evidence to be countered, given their reliance on interpretations of the verses "idle talk" (لَهْوَ الْحَدِيثِ) and "vain speech" (اللَّغْو), and their challenging the authenticity of the hadiths that warn against alcohol consumption and musical instruments?

The primary basis for interpreting the verse about "idle talk" (lahw al-hadith) as referring to singing is what has been established by the majority of exegetes, such as Abdullah ibn Mas'ud, who swore by it. The letter "lam" in His Almighty's saying: (that he may lead astray from the path of Allah) is the "lam of consequence," meaning that the matter ultimately leads to misguidance. Those involved in singing and its listeners have a share of blameworthiness according to their preoccupation with singing over the Qur'an, as they prefer singing to listening to the Qur'an, which indicates their deviation from the path of guidance. The second verse condemns "idle speech" (laghw), which includes both the prohibited and the disliked. The hadith of Abu Malik al-Ash'ari was not solely narrated by Hisham ibn Ammar nor Sadaqah, and it has other supporting evidences.