Surah 7. Al-A'raf, Ayah 83

Contrary to the Biblical account, according to which Lot's wife only "looked back" inadvertently (Genesis xix, 26), the Qur'an makes it clear in 11:81 and 66:10 that she remained behind deliberately, being at heart one with the sinning people of Sodom and having no faith in her husband.

In the biblical narrative she looks back, a physical act (see n. 1049): here she is a type of those who lag behind, i.e, whose mental and moral attitude, in spite of their association with the righteous, is to hark back to the glitter of wickedness and sin. The righteous should have one sole objective, the Way of Allah. They should not took behind, nor yet to the right or the left.