Surah 11. Hud, Ayah 81

I.e., in an abstract sense, "to what you are leaving behind" (Razi)-evidently meaning the severing of all associations with the sinful city, and not a physical looking-back.

Cf. 7:83 and the corresponding note, as well as 66:10 , where it is mentioned that Lot's wife, who was apparently a native of Sodom, had acted faithlessly towards her husband, i.e., had refused to believe in his prophetic mission; and her story was thereupon "propounded as a parable of those who are bent on denying the truth".

 Lot’s wife disbelieved in his message. It is believed that she is the one who informed the people of Lot’s handsome guests.

Even in Lot's household was one who detracted from the harmony of the family. She was disobedient to her husband, and he was here obeying Allah's Command. She looked back and shared the fate of the wicked inhabitants of the Cities of the Plain: see also lxvi. 10. The Biblical narrative suggests that she was turned into a pillar of salt (Gen. xix. 26).