“The signs of a believer are five:
- Performing 51 units of prayer [2] [of which 17 units are the obligatory prayers and 34 units are the recommended prayers per day]
- Pilgrimage of Imam Hussain (PBUH) on Arbaeen [the 40th day following Ashura],
- Wearing a ring on the right hand,
- Placing the forehead on the earth [during Sajdah in the prayer];
- Saying “Bismillahir Rahmanir Rahim” [which means “In the name of God, the compassionate, the merciful”] aloud during the prayer “[3]
(Tahzib Al-Ahkam: V.6 , P.52)