Imām  Hasan al-‘Askarī (AS) said:

“The worst servant of Allāh are those who are two faced and two-tongued; they praise their present friends and backbite the absent; they envy them for obtaining graces and disappoint them when they suffer a misfortune.”

[Reference: Tuhaf ul-Uqoul ,Short Maxims of Imam Al-Askari, Hadees 14]

With Salaams and Duas
Mirza Noorul Hasan