"He who acquires a branch of the knowledge of astrology learns a branch of magic of which he acquires more as long as he continues to do so." [Ibn Maajah]

عن ابن عباس -رضي الله عنهما- قال: قال رسول الله -صلى الله عليه وسلم-: "من اقتَبَس شُعْبَة من النُّجوم؛ فقد اقتَبَسَ شُعْبة من السِّحْر، زاد ما زاد". (ابن ماجه)