What were the reasons for the revelation of Surat An-Nur?

The scholars of Tafsir (exegesis) mentioned that the reason for the revelation of Allah’s saying: "The fornicator does not marry except a [female] fornicator or polytheist, and none marries the fornicator except a [male] fornicator or polytheist, and that has been forbidden to the believers" was that a man from among the Companions wanted to marry a woman who had been committing fornication.