Imam of the time, Imam Az Zaman (atfs) himself says the following in Ziyarat-e-Nahiya: فَلَئِنْ أَخَّرَتْنِى الدُّهُورُ ، وَ عاقَني عَنْ نَصْرِك َ الْمَقْدُورُ وَ لَمْ أَكُنْ لِمَنْ حارَبَك َ مُحارِباً، وَ لِمَنْ نَصَبَ لَك َ الْعَداوَةَ مُناصِباً ، فَلاَ نْدُبَنَّك َ صَباحاً وَ مَسآءً ،وَ لاَبْكِيَنَّ لَك َ بَدَلَ الدُّمُوعِ دَماً "Since I haw been pushed behind by the passage of time and being prevented from helping you by fate and I could not fight those who had fought you. And (since) I had rot been able to face your enemies I will continue to weep morning and evening and weep for you with tears of blood." [Source: Ziyarat Al Nahiya] http://www.ziaraat.org/other/nahiya.php Zaynab bint Ali (sa) shedding blood from her head for Imam Husain (as) فالتفتت زينب فرأت رأس أخيها فنطحت جبينها بمقدم المحمل، حتى رأينا الدم يخرج من تحت قناعها "Zainab (sa) turned and saw the head of her brother, then hit her forehead on the front part of the Mahmil,
The site is dedicated to the pure soul of Imam Husain(a.s).