From" Kitab al-Turf" of Sayed ibn Taoos quoting from Kitab al-Wassiyah of Shaikh Isa bin al-Mustafaad al-Zareer from Imam Kazim (A.S) from his Father (A.S):
"When Prophet Mohammad (P.B.U.H&H.P) was about to die, He called the companions and said: "Indeed the door of Fatima (S.A) is my door, and Her house is my house. So whoever disgraces it, has disgraced the veil/covering (Hijaab) of Allah (S.W.T)."
The narrator Isa then says, "Abu al-Hassan Imam Kazim (A.S) then cried for long and cut of rest of his speech and said, "By Allah (S.W.T) the veil of Allah (S.W.T) was disgraced, By Allah (S.W.T) the veil of Allah (S.W.T) was disgraced, By Allah (S.W.T) the veil of Allah (S.W.T) was disgraced, O My Mother (S.A)..."
[Source: Bihar al-Anwar, Vol. 22, Pg. 476-477]