Imam Zayn al-Abidin (AS) said,

Every single believer whose eyes shed tears for the martyrdom of al-Husayn (AS) such that they roll onto his cheeks, Allah prepares chambers for him in Paradise as a result of them wherein he will dwell for ages.

[Thawab al-A`amal, p. 108, no. 1]

Imam al-Sadiq (AS) said, 

Whoever recites a single verse of poetry about al-Husayn (AS), crying as a result and making ten other people cry, becomes deserving of Paradise and so do they.

[Thawab al-A`amal, p. 110, no. 3]

Imam al-Sadiq (AS) said,

Anger is the key to all evils.

[al-Kafi, v. 2, p. 303, no. 3]

Imam Ali (AS) said,

If you are reduced to poverty, then trade with Allah through giving in charity.

[Nahj al-Balagha, Saying 258]

Imam Ali (AS) said,

With death the world ends.

[Nahj al-Balagha, Sermon 156]