The Bhagavad Gita - Chapter 2.40
The Yoga of Understanding
In this path, there is no unsuccessful effort,
No reversal is known;
Even a little of this dharma
Rescues one from great fear .
not in this an effort lost it is.
pratyavāyo na vidyate
reverse not it is found.
svalpam apy asya dharmasya
a little even of it, of this discipline,
trāyate mahato bhayāt
protects from great danger.
Here (in the yoga doctrine of practice) no effort is lost,
Nor is any loss of progress found.
Even a little of this discipline
Protects one from great danger.
iha, here, here in the world.
abhikrama (m.), undertaking, effort.
nāsas (m. nom. sg. derivative noun from √na, loss, disappearance, destruction.
(abhikrama-nāsa, m. nom. sg. TP cpd., destruction of effort.)
asti (3rd sg. pr. indic. √as), it is, there is.
pratyavāyas (m. nom. sg. from prati ava √i), decrease, diminution, reverse, contrary course, opposite action.
vidyate (3rd sg. pr. indic. pass. √vid), it is found.
svalpam (m. acc. sg.), little, very small.
api, even, also.
asya (gen. sg.), of it, of this.
dharmasya (m. gen. sg.), of discipline, of law, of virtue.
trāyate (3rd sg. pr. indic. mid. √trāi), it protects, it rescues.
mahatas (n. abl. sg.), from great.
bhayiāt (n. abl. sg.), from danger, from fear.
abhikrama – undertaking, effort