Shaikh Saaleh Al-Fawzaan (may Allaah preserve him) said:

[من ضل لا يكون قدوة ولو كان عالما]

”Whoever goes astray cannot be an example to be followed even if he is a scholar…..”

Source: https://soundcloud.com/abo-moad-ibrahim-taoufik/obxa0v3i9bxi