Anas ibn Malik reported: The Messenger of Allah, peace and blessings be upon him, said to me:
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Young man, if you are able every morning and evening to remove any rancor from your heart towards anyone, do so.
Then, the Prophet said to me:
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Young man, that is my Sunnah. Whoever revives my Sunnah has loved me, and whoever loves me will be with me in Paradise.
Source: Sunan al-Tirmidhi? 2678, Grade: Hasan