“It is usual to start a lesson be it, Chanting, Sūtra, Āsana, with a prayer.
A prayer is recited and repeated according to the study or purpose of the lesson,
to show respect for the subject.
When the student is familiar with the prayer they repeat it along with the teacher.
Focusing the study with a prayer helps to recall earlier study, lineage of repetition.
The student is given the meaning later.
After the lesson another prayer is said to offer thanks for the learning and for everybody.”
– From study notes with TKV Desikachar England 1992