We sent (aforetime), to the Thamud, their brother Salih, saying, “Serve Allah”: But behold, they became two factions quarrelling with each other.
The main story of the Thamud, who were broken
up into two factions, the rich oppressing the poor and
keeping them out of the good things of life and the test
case of the She-camel, will be found in 26:141-159 and
the notes thereon.
The point here is the secret plot of the nine men against
the Prophet of Allah, whose teaching, they thought,
brought them ill-luck; but what they called ill-luck was
the just punishment from Allah for their own ill-deeds.
Their plot was foiled, and the whole community, which
was involved in evil, was destroyed. (R).
Yusuf Ali, Abdullah. Translation and Commentary of the Quran. (surah 27 verse 45). Quran Arabic with English Translation & Commentary (Tafsir) by Abdullah Yusuf Ali, Free Download (quran4u.com)