And, (O Beloved,) remember (Hud), the kinship brother of the people of ‘Ad, when he warned his people (of the dire consequences of their evil deeds) in al-Ahqaf, (the Sand-Dunes [a valley in Yemen, between Uman (Oman) and Mahra]) although (a number of) Warners (Messengers) had passed before and after him, (saying:) ‘Worship no one but Allah. I fear for you the punishment of a (Terrible) Day.’