Hadith.3360 - It is narrated from Ali ibn Suwayd, who said
I said to Abu al-Hasan al-Madhi (as) (Imam Musa ibn Jafar Al-Kadhim (as)): "These people call me to testify against my brothers."
Imam (as) said: 'Yes, establish the testimony for them, even if you fear harm for your brother.'"