Reference: Siyar A’laam an-Nubalaa – Volume 7, Page 246
‘Abdur-Razzaaq said:
I have not seen anyone more stronger in protecting that which he had [of knowledge] than ath-Thowree. It was said to him:
What prevented you from travelling to az-Zuhree [to seek knowledge]?
He said: I did not have any (enough) dirhams (money).