Reference: al-Hilyah – Volume 7, Page 322
Ibn Rumayh said:
The yearly income of al-Layth ibn Sa’d was 80,000 deenaars, [and despite this immense wealth] never did Allaah obligate upon him to extract even one dirham in zakaah[1].
Footnote:
[1] This is because he would charitably give plentifully throughout the year, leaving little for himself and his family.