Sahaba: if a Muslim has seen the Prophet, or talked to him, at least once when the Prophet was alive, he is called Sahabi. Plural form of Sahabi is Sahaba or As’hab.
 namaz: prayer that is performed five times per day in Islam.
 ruku’: bowing during the prayer of namaz.
 qawma: standing upright and motionless after ruku.
 jalsa: sitting upright and motionless for a moment between the two sajdas.