Does the saying of the Prophet, peace and blessings be upon him: "I have made an assumption, so do not hold me accountable for assumptions, but if I narrate to you from my Lord, I will never lie about Him," include what he informs about astronomical and medical matters, such as his narration about the prostration of the sun and the black seed?

Summary:

Muslim narrated that the Messenger of Allah, peace and blessings be upon him, said concerning the pollination of palm trees: "I do not think that will be of any benefit." Then he clarified that it was an assumption, and that if he (the Prophet) spoke about something from Allah, it must be taken. Al-Nawawi mentioned that the Prophet's opinion and assumption regarding worldly matters (matters of livelihood) were like anyone else's, and it is not impossible for such a thing to occur. This differs from his pronouncements on matters of astronomy or medicine, such as the confirmation of the sun rising between the two horns of a devil, and its prostration at sunset, and that the black seed contains a cure. These are reports that must be believed and are not in the realm of assumption.