Hadith.3202 - Ibn Abi Umayr narrated from Hisham, who said that Abu Abdullah Imam Jafar ibn Muhammad Al-Sadiq (as) said: "If one of you is far away and distant from us, let him ascend to the highest part of his home, perform two units of prayer, and gesture with greetings of peace toward our graves, for that greeting will reach us."

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

Hadith.3203 - In a narration from Hanan ibn Sadeer from his father, he said: Abu Abdullah Imam Jafar ibn Muhammad Al-Sadiq (as) said to me: "O Sadeer, do you visit the grave of al-Husayn (as) every day?" I said: "May I be your ransom, no." Imam (as) said: "How distant you are! Do you visit it every month?" I said: "No." Imam (as) said: "Do you visit it every year?" I said: "It may happen." Imam (as) said: "O Sadeer, how neglectful you are toward al-Husayn (as), peace be upon him. Do you not know that Allah (swt), the Blessed and Exalted, has a thousand thousand angels, disheveled and covered in dust, who cry and visit him without ceasing? What would it harm you, O Sadeer, to visit the grave of al-Husayn (as) five times every Friday or once every day?" I said: "May I be your ransom, there are many leagues between us and his grave." Imam (as) said to me: "Ascend to the roof of your house, turn right and left, then lift your head toward the sky, incline toward the direction of his grave, and say: 'Peace be upon you, O Aba Abdullah. Peace be upon you, and the mercy of Allah (swt) and His blessings.' It will be written for you as a visitation, and each visitation is equal to a Hajj and an Umrah." Sadeer said: "Sometimes I did this more than twenty times in a month."

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