Fortunate is he who is preoccupied with his own faults rather than the faults of others
Anas (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said:
“Fortunate is he who is preoccupied with his own faults rather than the faults of others.”
This Hadīth guides Muslims and encourages them to occupy themselves with self rectification, by adopting noble morals and abandoning vile sins. This is the right way that will save one from getting busy with the faults of others, and looking after their mistakes and deficiencies. So, whoever applies this attitude deserves the reward of 'Tūba', which is a tree in Paradise, or a highly elevated place therein. The Hadīth is weak, however, the description mentioned here is recommended based upon other authentic evidences.