Reward of reciting a coupled regarding Imam Hussain (a.s), crying, making others cry or making a crying face

1. Imam Jafar as-Sadiq (a.s) said, "O abu Haroon! Recite a couplet regarding Imam Hussain (a.s)." He recited a few lines. Imam said, "Recite them as they should be recited, i.e. recite them with grief." Then he recited: "When you pass by the grave of Hussain (a.s), say to his pure bones...". Imam cried a lot and said, "Continue reciting." He recited one more poem. Imam cried even more and wails were heard from behind the curtain also. When he finished reciting, Imam said, "O Abu Haroon! one who cried after reciting the poems of Imam Hussain (a.s) and makes ten people cry, Allah would make everyone enter paradise. One who cries after reciting the poem of of Imam Hussain (a.s) and makes five people cry, everyone would get paradise. One who recites the Poem of Imam Hussain (a.s) and makes a person cry, paradise would be made obligatory for both of them. If discussion of Imam Hussain (a.s) is held in front of a person and a tear equal to the wing of a fly comes out of his eyes, his reward is with the Almighty Allah and Allah wont be satisfied without giving him paradise."

2. Imam Jafar Sadiq (a.s) told Abu Umara, "Recite a poem regarding Imam Hussain (a.s)." He recited the poem and Imam (a.s) cried. He went on reciting and Imam (a.s) cried continuously till the wails started coming out of his house. Then Imam (a.s) said, "O Abu Umara! One who recites a poem regarding Imam Hussain (a.s) and makes fifty persons cry, Paradise belongs to him. One who recites a poem and forty persons cry, Paradise is for them. If thirty persons cry Paradise is for them also. One who recites a poem and twenty persons cry they too will get Paradise. One who makes ten people cry after reciting a poem of Imam Hussain (a.s) they too will get Paradise. One who makes a person cry after reciting a poem of Imam Hussain (a.s) and cries alone he too will get Paradise. One who makes just a crying face after reciting the poem regarding Imam Hussain (a.s) he too will get Paradise. 

3. Imam Jafar as-Sadiq (a.s), "One who recites a couplet regarding Imam Hussain (a.s) cries and makes ten persons cry they will get paradise. One who recites a couplet regarding Imam Hussain (a.s) cries and makes nine persons cry they will get paradise." He went on until he said, "One who recites a couplet regarding Imam Hussain (a.s) cries or makes a crying face, he would get paradise."

Ref: Sawaabul A'amaal