Before We Speak about the Religion

Imām Ibn Taimiyyah, may Allāh have mercy on him, said:

It is upon every believer to not speak about anything from the religion except in accordance with what the Messenger ﷺ came with and [to not] put himself forward, ahead of him [ﷺ]; instead, he must look to see what he [ﷺ] said so that what he says is in accordance with what he [ﷺ] said […].

Majmūʿ Al-Fatāwá, vol. 13, pp. 62-3.