SHAFAQNA – It is narrated from Sadir who narrated from Imam Sadeq (AS) who said: O’ Sadir, do you perform Ziarat Imam Hussain (AS) everyday? I replied: No. Imam (AS) said: You are not doing the right thing! Do you perform Ziarat every month? I replied: No, Imam (AS) asked again: Do you go to pilgrimage every year? I replied: No. Imam Sadeq (AS) said: O’ Sadir, how inattentive and unwilling you are?! Don’t you know that God appointed thousands and thousands of angels, they are all grieved and covered in dust, and constantly crying for Imam Hussain (AS); and they constantly perform Ziarat and do not get tired? What will happen if you perform Ziarat of Imam Hussain (AS) 5 times a week or every day? I replied: But there is a long distance between the grave of Imam Hussain (AS) and me. Imam (AS) said: Go on the roof of your house, look right and look left, and then raise your head towards the sky, and after that, look and pay attention towards the grave of Imam Hussain (AS) and say: “Assalaamu Alayk ya Aba-Abdellah, Assalaamu Alayk wa Rahmatullah wa Barakatuh”, in this way, this deed will be counted as performing one Ziarat for you. And every Ziarat, has the rewards of one Hajj, and one Omrah. After that day, I have been performing this deed (Ziarat of Imam Hussain (AS)), at least 20 times a month .
 Al-Kafi, Vol. 4, Page 589, Hadith 8.