Imam Reza's (pbuh) lesson to all Muslims is perseverance & vigilance in facing enemy

A lesson Imam Reza (pbuh) has taught all of us is, “Oh, Muslims! Do not grow tired of struggling! Do not sleep, since the enemy is always awake. He is disguised in various forms and costumes, using different masks and colorful paint. Have sharp eyes! Recognize the enemy, and learn how to fight the enemy.” And, like Imam Ali b. Musa al-Reza (pbuh) continue to struggle from the beginning to the end!” Imam Khamenei

Imam Khamenei, [November 24,1984]