hai sila tu mere dard ka-learn urdu

Hai sila tu mere dard ka

the lyrics are from song  teri galliyan of ek villain

hai- are

sila-reward

tu- you ( informal ..only use it with very very close friends or you will be considered either very rude or an uncultured illiterate swine )

mere - mine

dard- pain

ka - shows possession

point to be noted is  that it's poetry so the arrangement of words is bit off

in normal routine you will say

tu mere dard ka sila hai

جب تک ہم کسی کے ہمدرد نہیں بنتے نا

تب تک ہم درد سے اور درد ہم سے جدا نہیں ہوتا۔

jab tak hum kisi ke hamdard nahin bante na

tab tak dard hum se aur hum dard se juda nahin hota

Unless we share someone's pain

until then

we don't get separated from pain and pain doesn't get separated from us

jab-when

tak-til

jab tak - until then

hum-we/us

kisi-someone

se-from

humdard-sympathetic

nahin-not

bante-become

na- doesnt have direct translation , it softens the tone of the sentence

tab tk-till then

dard-pain

juda-separate

hota-happens