Imam Husayn’s example taught us all that his is the true path in all history – do not mind the inadequacy of numbers. It is the quality that counts not quantity. Source : The Ashura Uprising In The Words & Messages of Imam Khomeini (R)
One characteristic of the event…
One characteristic of the event [of Karbala] is that Imam Husayn’s movement was solely and truly for the sake of God, the religion and rectifying the society of Muslims. Source : Khamenei.ir | Imam Khamenei