Translation:

83. But We saved him and his family except his wife: she was of those who lagged behind.

Notes (Tafseer)

1051. 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.