Imam Mahdi (a.t.f.s.) in his tawqee:

"We are not negligent of your affairs and neither do we forget your remembrance. If it would have been so, then calamities and difficulties would have encircled you and the enemies would have annihilated you."

(Al-Ehtejaaj of Sheikh Tabarsi, vol. 2, p. 497, 498)