8.4.55 khari cha
...............
This is one of the consonant sandhi sutras.
When a 'jhal' is succeeded by a 'khar', replace it with a 'char'.
The following illustration shows the derivation of an example shown below:
BG 2.17
kashchit kartum ⇐{8.4.55}
kashchid kartum ⇐{8.2.39}
kashchit kartum
BG 2.17
Underlying: avinAshi tu tat viddhi yena sarvam idam tatam , vinAsham avyayasya asya na kashchit kartum arhati .kashchit
BG 2.30
Underlying: dehI nityam avadhyas ayam dehe sarvasya bhArata , tasmAt sarvANNi bhUtAni na tvam shochitum arhasi .tasmAt
BG 2.62
Underlying: dhyAyatas viSHayAn puNsas saNgas teSHu upajAyate , saNgAt saNjAyate kAmas kAmAt krodhas abhijAyate .saNgAt
kAmAt