Is using the feet of prostitutes to satisfy sexual urges considered Zina (fornication/adultery)?

Enjoying oneself with a non-mahram woman without a lawful marriage is a forbidden enjoyment, an abominable sin, and a clear transgression. It is considered a metaphorical form of zina (fornication/adultery), as the Prophet, peace and blessings be upon him, said: "The son of Adam has been allotted his share of zina, which he will inevitably commit. The zina of the eyes is looking, the zina of the ears is listening, the zina of the tongue is speaking, the zina of the hand is touching, the zina of the foot is walking, and the heart desires and wishes, and the private parts confirm or deny that." The one who commits this must engage in sincere repentance and remain chaste until marriage becomes possible for them. Among the greatest aids to patience and chastity is fasting, for the Prophet, peace and blessings be upon him, said: "O young people, whoever among you can afford to marry, let him do so, for it helps in lowering the gaze and guarding one’s chastity. And whoever cannot afford it, let him fast, for it will be a shield for him." One should be keen to lower the gaze, close the doors to temptation, keep away from anything that arouses desire, strengthen one's connection with Allah, occupy one's time with what benefits them in religious and worldly matters, and associate with righteous companions.