Riyad as-Salihin

'Atiyyah bin 'Urwah As-Sa'di (May Allah be pleased with him) reported: Messenger of Allah (ﷺ) said, "No one will attain complete righteousness until he abandons (certain) unobjectionable (but doubtful) things so as to remain on his guard against something objectionable."

[At-Tirmidhi, who classified it as Hadith Hasan].