Abstain from all forms of sinning , Repent sincerely for any wrongdoings .

This hadith is narrated by Ibn 'Abbas and it emphasizes the incompatibility between faith and sin. It states that no one who commits zina, drinks wine, steals or kills can be a believer at the moment when they are committing these sins. This hadith teaches us that we must strive to stay away from all forms of sin in order to remain true believers in Allah. We should also remember that Allah is All-Forgiving and Merciful so if we do make mistakes or commit sins then we should repent sincerely for our actions.