Islam, or he believes that Allah is the One who sends down the rain but that the star is its cause. He thus attributes the blessing to what he regards as the cause of its descent. This constitutes ingratitude for the blessing and is a form of hidden polytheism.
The stars are not causes of rainfall. Rather, rain descends because the servants are in need and utterly dependent upon their Lord: they ask Him, seek His forgiveness, repent to Him, and appeal to Him both through their condition and through their words. He then sends them rain, in His wisdom and mercy, at the time best suited to their need and necessity. A servant’s monotheism cannot be complete until he acknowledges Allah’s outward and inward blessings upon himself and all creation, attributes them to Him, and uses them as an aid to worship, remember, and thank Him.1
It is part of the Sunnah for a Muslim to say when the wind blows fiercely: “O Allah, I ask You for its good, the good within it, and the good it was sent to bring; and I seek refuge in You from its evil, the evil within it, and the evil it was sent to bring.” Muslim narrated in his Sahih from Āisha—may Allah be pleased with her—that she said: “When the wind blew fiercely [that is, when its blowing intensified], the Prophet—may Allah bless him and grant him peace—would say: ‘O Allah, I ask You for its good, the good within it, and the good it was sent to bring; and I seek refuge in You from its evil, the evil within it, and the evil it was sent to bring.’”2.
A Muslim may not curse the wind, for it is subjected to Allah’s command, governed and commanded by Him. Al-Bukhārī narrated in al-Adab al-Mufrad, and Abū Dāwūd in al-Sunan, from Abū Hurayra—may Allah be pleased with him—who said: I heard the Messenger of Allah—may Allah bless him and grant him peace—say: “The wind is one of Allah’s winds. It comes with mercy and it comes with punishment. When you see it, do not curse it; rather, ask Allah for its good and seek refuge in Allah from its evil.”3.