When the term Raafidah was applied to them
From the time of the revolt of Zaid, the Shi’ah were divided into Raafidah and Zaidiyyah, and when he (Zaid) was asked about Abu Bakr and ‘Umar he invoked mercy upon them both, a people rejected him (rafadahu), and he said to them, “You have rejected me (rafadtumoonee)”. So they were called “ar-Raafidah”, due to their rejection of him. And anyone who did not reject him from amongst the Shi’ah was called a “Zaidiyy” due to their ascription to him.
Shaykh ul-Islaam Ibn Taymiyyah
Minhaaj as-Sunnah an-Nabawiyyah of Shaykh ul-Islaam Ibn Taymiyyah 1/35
Translated by Abu `Iyaad Amjad Rafiq

Wa alaikum assalam wa rahmatullaahi wa barakaatuhu
Jazaak Allaahu Khairan brothers.
“Subhanak Allaahuma wa bihamdika ash-hadu anlaa illaaha illa anta astaghfiruka wa atubu ilayk.
If I said anything correct, then it is from Allaah (subhanahu wa taa’ala), and if I erred, then that is from me and shaytan. ”
wallahu akbar wallahu akbar subhaanallah
Alhamdulillagh yaa akhi!!!!!!!
Assalamu alaikum, what a wonderful enlightment on shia. Thanks. May Allah reward u for this work and other islam work with Aljannah. Ameen.