There are no eyes and (there is) not a tear loved more by Allāh 
than the eyes of those who cry and shed tears over Husayn (a). 
Verily anyone who cries over him connects with Fātimah (sa), 
supports her (in her lamentation), connects with the Messenger 
of Allāh (saww), and fulfils our rights. 

Kāmiluz Ziyārāt Chapter 26. Hadith 6