Students must never treat their Ustads with disrespect

My father was very insistant that a student should never treat his Ustad with disrespect. I had studied Mishkat in the manner described above. In the rest of the Madressa Mishkat and other hadeeth kitaabs were taught with long explanatory lectures given. On various occasions I had sought permission for listening to lectures on some hadeeth kitaabs from some other teachers but my father refused to grant permission that any hadeeth kitaab should be studied under anybody else but himself and Hazrat Khalil Ahmad Saheb. I was however allowed to study logic kitaabs and language from others. In this there was no harm. He used to say: "Disrespect to an Ustad is an insult. Should you show any disrespect to any Ustad teaching logic or philosophy, you will not derive benefit from those books which in itself is a calamity. But should you show disrespect to any Ustad teaching hadeeth, this will be unforgivable and not tolerated and your knowledge of hadeeth will be wasted."