Did the companions of our infallible Imams (a.s.) like Meesam al-Tammar, Ammar Yasir, Malik al-Ashtar, Hujr Ibn Adi, martyrs of Karbala, other companions, scholars, and all those who laid their lives in defense of the Mastership (Wilaayah) of Ahlul Bait (peace be upon them) express dissociation (Tabarra) or no?
Of course, they did since they were mindful of the fact that the Mastership of the Ahlul Bait (peace be upon them) is incomplete without dissociating from their enemies. For them, the divine religion, especially the Wilaayah of Ahlul Bait (peace be upon them) was more valuable than their own lives.
When a person complained to Imam Ali Ibn Moosa al-Reza (peace be upon him), “You are speaking all this while blood (of Shias) is still dripping from the swords (of enemies).” Imam Reza (peace be upon him) replied to him:
“Certainly, with Allah is a golden valley which He protects through ants who are His weakest of creations. But even if tall camels wish to enter it, they cannot reach it.”
[Al-Kaafi, vol. 2, p. 59, H. 11]
Hence, if someone attains martyrdom due to Tabarra, then it is certainly a cause of a great blessing for him.