यत् अग्रे च अनुबन्धे च सुखम् मोहनम् आत्मनः
निद्रा आलस्य प्रमाद उत्थम् तत् तामसम् उदाहृतम्

यदग्रे चानुबन्धे च सुखं मोहनमात्मनः ।
निद्रालस्यप्रमादोत्थं तत्तामसमुदाहृतम् ॥१८:३९॥

yadagre chaanubandhe cha sukham mohanamaatmanah
nidraalasyapramaadottham tattaamasamudaahritam ||18:39||

yat agre cha anubandhe cha sukham mohanam aatmanah
nidraa aalasya pramaada uttham tat taamasam udaahritam

Purport Which, in the beginning, binds the soul to affection but results in sleep, laziness and madness, that happiness is the illustration of Taamas (having the characteristics of darkness or ignorance).

यत् (yat) -- that; which
अग्रे (agre) -- in the beginning; ahead; forward
च (cha) -- also; and
अनुबन्धे (anubandhe) -- by binding; by connection
च (cha) -- also; and
सुखम् (sukham) -- happiness; pleasure
मोहनम् (mohanam) -- infatuation; affection; attraction
आत्मनः (aatmanah) -- from/than/of the self/soul
निद्रा (nidraa) -- sleep; sloth; slumber
आलस्य (aalasya) -- laziness; idleness
प्रमाद (pramaada) -- madness; carelessness
उत्थम् (uttham) -- arising from; result in
तत् (tat) -- that
तामसम् (taamasam) -- Tamas; quality or character of darkness or ignorance
उदाहृतम् (udaahritam) -- illustrated; declared