How does Imam Khomeini explain that a believer should never slander others?

He whose Guardian is God, the Blessed and Exalted, and who is taken by Him out from the darkness never commits another sin.

Imam Khomeini: Hearts of divine angels are centered on the holy shrine of Imam Reza (PBUH).

Sahifeh ye-Imam, V. 16, P. 388

Humanity has been blessed in Rabi’ Al-Awwal by the birth of the Holy Prophet Muhammad (PBUH)

Happy beginning of the month of Rabi al-Awwal to all Muslims

Imam Reza (PBUH) holy shrine center of knowledge, landing place of angels

Imam Khomeini, the late founder of the Islamic Republic once described the holy shrine of Imam Reza (PBUH) in city of Mashhad as a site of knowledge, wisdom and landing place of divine angels.

Imam Khomeini: Imam Rida (PBUH) was also committed to keep the people’s persistence and ...

Sahifeh ye-Imam, Vol. 13, P. 426

Imam Rida, the source of tranquility

Imam Reza (a.s.) is a perfect model for attaining worldly and hereafter salvation