من لا يحضره الفقيه, volume 2, page 580

Hadith.3169 - Salih ibn Uqbah narrated from Bashir al-Dahhan, who said: I said to Abu Abdullah Imam Jafar ibn Muhammad Al-Sadiq (as) "Sometimes I miss the Hajj, so I perform the acts of Arafah at the grave of Husayn, peace be upon him." Imam (as) replied: "You have done well, O Bashir. Any believer who visits the grave of Husayn (as) knowing his right, on a day other than Eid, will have twenty accepted Hajj, twenty accepted Umrah, and twenty battles with a divinely sent prophet or a just Imam recorded for them. And whoever visits him on the day of Eid will have one thousand accepted Hajj, one thousand accepted Umrah, and one thousand battles with a divinely sent prophet or a just Imam recorded for them." I said to him: "And how can this compare to the station of Arafah?" Imam looked at me with a displeased expression and then said: "O Bashir, when a believer comes to the grave of Husayn (as) on the Day of Arafah, knowing his right, performs the ritual bath in the Euphrates, and then goes to him, Allah (swt), the Mighty and Exalted, will record for him with every step a Hajj with all its rites." And I do not recall him except saying: "and an Umrah as well."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.3170 - It is narrated from Dawud al-Raqqi, who said: I heard Abu Abdullah (Ja‘far ibn Muhammad), Abu al-Hasan (Imam Musa ibn Jafar Al-Kadhim), and Abu al-Hasan (Imam Ali ibn Musa Ar-Ridha (as)) all saying: "Whoever visits the grave of Imam Hussain ibn Ali (as) on the Day of Arafah, Allah (swt), the Exalted, will turn their heart into one of contentment and tranquility."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.