Abu Hurairah (r.a.) narrates that the Prophet (s.a.w.) said:
"One sees a stalk in his brother's eye but forgets the trunk of his own eye." (Ibne Habban)
Note: It means that the people see even a little fault of others but do not look at their own great sins and faults.
(From 'Muntakhab Ahadith' by Maulana Muhammad Yousuf Kandhlavi)