ومن كلام له (عليه السلام)
لبعض أصحابه لمّا عزم على المسير إِلى الخوارج، فقال له: يا أميرالمؤمنين إن سرت في
هذا الوقت، خشيتُ ألاَّ تظفر بمرادك، من طريق علم النجوم، فقال(عليه السلام)
أَتَزْعَمُ أَنَّكَ تَهْدِي إِلَى السَّاعَةِ الَّتِي مَنْ سَارَ فِيهَا صُرِفَ عَنْهُ السُّوءُ؟ وَتُخَوِّفُ مِنَ السَّاعَةِ الَّتي مَنْ سَارَ فِيهَا حَاقَ بِهِ الضُّرُّ؟ فَمَنْ صَدَّقَكَ بِهذَا فَقَدْ كَذَّبَ الْقُرْآنَ، وَاسْتَغْنَى عَنِ الاِسْتِعَانَةِ بِاللهِ عزّوجلّ فِي نَيْلِ الَْمحْبُوبِ وَدَفْعِ الْمَكْرُوهِ، وَتَبْتَغِي في قوْلِكَ لِلْعَامِلِ بِأَمْرِكَ أَنْ يُولِيَكَ الْحَمْدَ دُونَ رَبِّهِ، لاَِنَّكَ ـ بِزَعْمِكَ ـ أَنْتَ هَدَيْتَهُ إِلَى السَّاعَةِ الَّتِي نَالَ فِيهَا النَّفْعَ، وَأَمِنَ الضُّرَّ!!
ثم أقبل(عليه السلام) على الناس فقال:
أَيُّهَا النَّاسُ، إِيَّاكُمْ وَتَعَلُّمَ النُّجُومِ، إِلاَّ مَا يُهْتَدَى بِهِ في بَرٍّ أَوْ بَحْر، فَإِنَّهَا تَدْعُو إِلَى الْكَهَانَةِ، [و]المُنَجَّمُ كَالْكَاهِنِ ، وَالْكَاهِنُ كَالسَّاحِرِ، وَالسَّاحِرُ كَالْكَافِرِ! وَالْكَافِرُ في النَّارِ! سِيرُوا عَلَى اسْمِ اللهِ.
Say: "None (either) in the heavens or in the earth knoweth the unseen save Allah... " (27:65)Secondly that under his misconception the astrologer believes that he can know his benefit or harm through knowing the future. In that case he would be regardless of turning to Allah and seeking His help, while this indifference towards Allah and self-reliance is a sort of heresy and atheism, which puts an end to his hope in Allah. Thirdly, that if he succeeds in any objective, he would regard this success to be the result of his knowledge of astrology, as a result of which he would praise himself rather than Allah, and will expect that whomever he guides in this manner he too should be grateful to him rather than to Allah . These points do not apply to astrology to the extent it may be believed that the astrological findings are in the nature of effect of medicines which are subject to alteration at the will of Allah. The competence achieved by most of our religious scholars in astrology is correct in this very ground that they did not regard its findings as final.