Stay away from plotting or scheming against others . Remain vigilant and protect yourself .

This hadith is narrated by Sa'd ibn Malik, who heard it from the Prophet Muhammad ﷺ. It teaches us that anyone who plots against the people of Medina will not succeed and their plans will be destroyed just like how salt dissolves in water. This hadith serves as a reminder to those who wish to do harm to others that their plans are doomed to fail, no matter how hard they try. It also encourages us to stay away from any kind of plotting or scheming against others, as it is ultimately futile and can only lead to destruction. Furthermore, this hadith also serves as a warning for those living in Medina that they should remain vigilant and protect themselves from any potential threats or plots against them.