Hadhrat Abu Hurayrah Radhiallaahu ‘Anhu narrates that Rasoolullaah Sallallaahu ‘Alayhi Wa Sallam said:
وعن أبي هريرة رضي الله عنه قال قال رسول الله صلى الله عليه وسلم يبصر أحدكم القذاة في عين أخيه وينسى الجذع في عينه
Yubsaru ahadukum al-qadhaatu fee ‘ayni akheehi wa yunsa al-jiz’u fee ‘aynihi.
One of you sees the speck of dirt in the eye of his brother, but fails to see the large piece of dirt in his own eye.
Reported by Ibn Hibbaan in his Saheeh, and is mentioned in Saheeh At-Targheeb Wat-Tarheeb