Reference: Siyar A’laam an-Nubalaa – Volume 12, Page 407
Muhammad ibn Ismaa’eel al-Bukhaaree said:
I have written [ahaadeeth] from more than 1,000 Shaykhs, and from each one I have [taken] 10,000 ahaadeeth; There is nothing I have except that I recall its isnaad.
