The Dream Stele, erected between the paws of the Great Sphinx by Thutmose IV, records the famous account in which the young prince falls asleep in the shadow of the monument and receives a divine promise of kingship.  In this illustration published by  Karl Richard Lepsius, the Sphinx is depicted twice, back-to -back, resting on a structure that appears to contain a doorway beneath the monument.

In the text of the stele, the Sphinx—identified with the god Khepri—addresses the prince and promises him the kingship of Egypt if he restores the monument and clears away the sand that has begun to engulf it:

"...it came to pass that the King's Son Thothmes came, coursing at the time of mid-day, and he rested in the shadow of this Great God. Sleep seized him at the hour when the sun was in its zenith, and he found the Majesty of this Revered God [the Sphinx] speaking with his own mouth, as a father speaks with his son, saying: 'Behold thou me, my son, Thothmes. I am thy father, Hor-em-akhet-Kheperi-Ra-Atum; I will give to thee my Kingdom upon earth...The sands of the Sanctuary, upon which I am, have reached me; turn to me in order to do what I desire." (Translation: Hassan, Selim (1953). The Great Sphinx And Its Secrets Cairo: Government Press. pp. 94–95.)

Source: Denkmäler aus Aegypten und Aethiopien:Neues Reich. Dynastie XVIII. Pyramiden von Giseh [Jîzah]. (1849 - 1856) Stele vor dem grossen Sphinx.