Reference: Siyar A’laam an-Nubalaa – Volume 4, Page 301
ash-Sha’bee said:
For 20 years, I have not heard a man narrate hadeeth except that I know more about it than him; [however] I had forgotten some knowledge [the extent of which] if a man was to memorise that [which I had forgotten] he would be an ‘aalim.
