Sajdah is the act of prostration in the Salat, when seven portions of the body touch the earth: the forehead on pure ground, two palms, two knees, and the two big toes. The two Sajdahs together are called sajdatain .
SAJDATAIN
Meaning of SAJDATAIN in English
Advanced Islamic English dictionary. Расширенный исламский словарь английского языка. 2012