What is the virtue of reciting the first six verses of Surat Al-Hadid?

There is no authentic hadith about the virtue of the first six verses of Surah Al-Hadid. However, there is a hadith about the general virtue of the "Musabbihat" (surahs that begin with the glorification of Allah), narrated by Al-Irbad ibn Sariyah, that the Prophet (peace be upon him) used to recite the Musabbihat before sleeping and would say: "Indeed, in them there is a verse better than a thousand verses."