PRAYATNA SHAITHILYA ANANTA SAMAPATTI BHYAM ||47||

प्रयत्नशैथिल्यानन्तसमापत्तिभ्याम् ॥४७॥

prayatna-śaithilya-ananta-samāpatti-bhyām ||47||

The key to success in this regard is practice with effort, which becomes progressively easier, combined with deep contemplation (samapatti). ||47||


prayatna = tension; effort 
śaithilya = relaxing; loosening 
ananta = limitless; infinite 
samāpatti = state of enlightenment; deep contemplation
abhyām = both