Imam Sadiq (as) said: Our Shia are the people of piety and diligence, loyalty and honesty, and asceticism and worship. They perform fifty one rakats in a single day and night. They pass their nights with worship and their days with fasting. They defray the zakat from their wealth, perform the hajj, and refrain from committing any forbidden thing.

Imam Reza (as) said: Our (true) Shia are those who submit to our orders, carry out our directives, and dissent from our enemies. He who does not enjoy such characteristics is not one of us.

Imam Sadiq (as) said: He who claims being one of our Shia while he is clinging to the handle of somebody else is surely telling a lie.

Imam Sadiq (as) said: He who says La Ilaha illa Allah – there is no god but Allah – sincerely will be in paradise. Sincerity, here means that this saying should prevent him from violating the things that Allah deems unlawful.

Reference: Sifat ush Shia