they acquired a lot of knowledge of the different categories.. and they were busy learning the way to debate and silence those people.. but they are of two groups one of them is misguided and misleading and the other is correct.
واستكثروا من علم المقولات المختلفة.. واشتغلوا بتعلم الطريق فى مناظرة أولئك وإفحامهم.. ولكنهم على فرقتين إحداهما ضالة مضلة، والأخرى محقة.