She was told, "Enter the palace." But when she saw it, she thought it was a body of water1 and uncovered her shins [to wade through]. He said, "Indeed, it is a palace [whose floor is] made smooth with glass." She said, "My Lord, indeed I have wronged myself, and I submit with Solomon to Allāh, Lord of the worlds."
Translation: Saheeh International (English)
1 The floor was transparent, and beneath it was flowing water.
It was said to her: “Enter the palace” which was like a plane surface. When she entered it, she thought it was water and uncovered her shins to enter it. Solomon (peace be upon him) said: “It is a palace which has been made smooth with glass”. He called her to Islam, so she accepted what he called her towards, saying: “O Lord, I wronged myself by worshipping others besides You, and I have submitted with Solomon to Allah, Lord of all created things”.