What are the legitimate Sharia boundaries that must be observed when designing a robotic doll to teach children how to pray?

The questioner is thanked for his eagerness to benefit Muslims. As for the question, there is no religious prohibition in this idea except for the issue of images and statues. Implementing the idea in the form of dolls is possible, as many scholars have made an exception for images of children for the purpose of teaching and disciplining them. Effort should be made to obliterate the shape of the face, such as neglecting the shape of the eyes and ears, based on the saying of the Prophet, peace and blessings be upon him: "The image is the head, so if the head is cut off, there is no image." Reliance must be placed on the authentic supplications firmly established from the Prophet, peace and blessings be upon him, and one can rely on books such as "Mukhtasar al-Nasiha" and "Hisn al-Muslim."