Putting Allah's Name next to that of His Prophet ﷺ
Question :
Allah's name is often written on some signs, posters, or plaques, and alongside it is written the Prophet's name: "Allâh/Muhammad." Please clarify this issue.
Answer:
This practice has become widespread, and in many different forms. It is not allowed to write Allah's name alongside the Prophet's name. A man said to the Messenger of Allah ﷺ, "Whatever Allâh Almighty wills and (whatever) you will." The Messenger of Allah ﷺ said'
"Have you made me an equal to Allah; rather (say): Whatever Allah wills alone."
Furthermore, if the purpose of hanging up the Prophet's name on a wall is to seek blessings, then this is also not allowed; seeking blessings is done by following the Sunnah of the Prophet ﷺ and adhering to his teachings.
Similar is the ruling for hanging plaques with verses of the Noble Qur'an written on them in one's home nothing of the like has been reported from the Messenger of Allah, from his Companions, from their Companions, or from any one of our pious predecessors. I don't even know how this innovation came to be: it is in reality a mere innovation, because the Qur'an was revealed to be read and recited, not to be hung up on walls.
There is additional evil in hanging them on walls, for the people who do it might come to believe that they will be protected from harm by doing so. Thus they will deviate from the true form of protection recitation of the Qur'an, such as the recitation of Ayat Al-Kursi, about which the Prophet ﷺ said:
"Whoever reads it at night, he will have a protector from Allah, and Shaytan will not come near him until the morning."
Sitting rooms are often places wherein people speak unlawful speech or play unlawful musical instruments, and it is not allowed to combine Allah's Words with a place like this.
This is why we advise our Muslim brothers not to hang up posters that contain verses of the Qur'an, Allah's name, or the name of the Prophet ﷺ.
Source:
Ibn 'Uthaimin
Fatawa Islamiyah, Vol. 8 Pages 325-326