What is the ruling on placing a paper next to the worshipper with instructions on how to pray and the surahs to be recited during prayer?

Nothing from the surahs is obligatory to recite in prayer except Al-Fatiha. The fundamental principle is that the worshiper recites the remembrances (adhkar) from memory, to be closer to devotion (khushu'). However, if the worshiper uses a paper to read the adhkar of prayer, their prayer is not invalidated, because it is a minor action. The proof for this is that the Prophet, peace and blessings be upon him, said to Aisha, may Allah be pleased with her, concerning her curtain (qiram): "Remove your curtain, for its images keep appearing to me in my prayer." This indicates that verifying a written text during prayer does not invalidate it. What is recommended is to avoid this action, but for someone who needs a paper to read something from the pillars of prayer and what it is not valid without, because they do not memorize it, then this is necessary and obligatory for them.