-Saying greetings to Imams wherever you are, reaches him.
Greeting Imam Hussain (A.S) from afar Distance
Greeting,
Imam Sadiq (A.S) said to Sadir:
Don't you know that there are two thousand angels (a thousand angels) who cry over Imam Hussain with disheveled and dusty hair and visit them and do not give up?
What will happen to you, Sadir! That you visit the grave of Imam Hussain (AS) five times every Friday and once every day
He said: There are many distances between us and Karbala!
He said, "Go to the top of your house, so look to the right and left and raise your head to the sky, to the grave of the Holy Prophet and say: Peace be upon you O Aba Abdullah Peace be upon you and may God's mercy and blessings are upon you."
So, for your pilgrimage, one Hajj and one Umrah will be written.
Yunus bin Zabi'an said to Imam Sadiq (A.S):
I will make many sacrifices to remember Imam Hussain (AS), so what should I say at that time?
He said: Say it 3 times
Peace be upon you Yaaba Abdullah
This is a close greeting. The distance reaches that Imam[1]
Reference:
[1] Mufatih al-Jannan, page 745, 826 to 830