Y.S. 3.4 Tryam ekatra samyamah
Tryam these three
ekatra jointly, together
samyamah defining, holding together, integration
These three together: dharana, dhyana and Samadhi, constitute integration or samyama
Samyama is a technical word defining the integration of concentration (dharana), meditation (dhyana) and absorption (absorption)
The following analogy shows the organic relationship between dharana, dhyana and Samadhi. When one contemplates a diamond, one at first sees with great clarity the gem itself. Gradually one becomes aware of the light glowing from its center. As awareness of the light grows, awareness of the stone as an object diminishes. Then there is only brightness, no source, no object. When the light is everywhere, that is Samadhi.
Y.S.3.5 Tajjayat prajnalokah
Taj from that
jayat by mastery, by attainment, conquest
prajna awareness, wisdom, judgement, discrimination
alokah light, luster, insight
From mastery of samyama comes the light of awareness and insight
Y.S. 3.6 Tasya bhumisu viniyogah
Tasya Its (samyama)
bhumisu degree, step, stage
viniyogah application
Samyama may be applied in various spheres to derive its usefulness
This sutra affirms that no-one can expect success or mastery without regular practice, and also warns one not to jump to higher stages of practice without first establishing a firm foundation through the primary steps of yoga.