Advaita Sadhana - tripaJNchaaN^ga yoga

[Sunder Hattangadi]

sajaatiiyapravaahashcha vijaatiiyatiraskR^itiH .
niyamo hi paraanando niyamaatkriyate budhaiH .. 105..

sajaatiiyapravahaH = the continuous flow of one kind of thought
cha = and
vijaatiiyatiraskR^itiH = the rjection of all that is foreign to it
niyamaH = 'niyama'
hi = verily
paraanandaH = the supreme bliss
niyamaat.h = regularly
kriyate = is practised
budhaiH = by the wise

The continuous flow of only one kind of thought ( viz. unity of Atman and
Brahman) to the exclusion of all other thoughts, is called 'Niyama', which
is verily the supreme bliss, and is regularly practised by the wise.

[ In Patanjali Yoga Sutra, II : 32

niyama = shaucha             = purity of body and mind
        +santoshha           = contentment
        +tapaH               = restraint of body, mind, and speech
        +svaadhyaaya         = Vedic study
        +iishvarapraNidhaana = offering actions as worship of God