Amina Inloes, Amina Inloes is originally from the US and has a PhD in Islamic Studies from the University of Exeter on Shi'a hadith. She is the program leader for the MA Islamic Studies program at the... Answered 4 years ago
It is related al-Ash'ath ibn Qays (al-Amali, al-Saduq, p. 185) went blind for refusing to bear witness to what happened at Ghadeer.
Some also mention Zayd ibn Arqam although this might be in error.