The light of Imam Hussein (peace be upon him), which is of Divine lights, will not only be extinguished, but every moment will add to the heat and ardor existing in the hearts of the believers due to this great tragedy; namely the martyrdom of Imam Hussein (as). Imam Hussein is everlasting, those who weep for him are remembered and are permanent, his flag stays and remembered forever, those who wear black because of his martyrdom will be perpetual, try not to trouble yourselves to get rid of Imam Hussein and his followers and mourners. The Infallible Imams (as) have emphatically commanded the visitation and pilgrimage of Imam Hussein (as). After crying for the calamities that afflicted Imam Hussein and his family, what is of great importance and is of significant priority is his pilgrimage.
source : erfan.ir