What is the relationship between stars and the universe, and what are their benefits and effects, especially those of the Pleiades on epidemics, as mentioned in the weak hadith: "When the Pleiades appear, the epidemic goes away," and what should we believe for protection from polytheism?

Allah created the stars for several wisdoms, including: adorning the heavens, stoning the devils, and guiding people in the land and sea, as stated in the Holy Quran.

There is no Hadith with the wording: "If the Pleiades rise, the epidemic is gone." However, it may refer to the prohibition of selling fruits until they ripen and are safe from blight, and this time coincides with the rising of the Pleiades, as mentioned in the Hadith of Ibn Umar.

The rising of the Pleiades at the beginning of summer accompanies the ripening of fruits and the disappearance of their blights, but it is not the direct cause; rather, it is a time for that. It must be believed that Allah alone is the orchestrator of the universe, and that the stars are subjected as signs for what His custom has dictated.