From my side:
Sanyo:
"Vo meri neend mera chian mujhe lautado
vo mera pyaar mera dard mujhe lautado
neend jitni bhi miane khoy hai,
pyaar jitna bhi maine khoya hai,
......." (hum hai rahi pyaar ke)
Prithvi:
"Jhooka hawa ka aaj bhi, neende udata hoga na,
tera dupatta, aaj bhi tere sar se sarakta hoga na,...."
(Hum dil de chuke sanam)
Both of them:
"Hum juda ho gae,
raaste kho gae,
magar hum milenge,
magar hum milenge,
yeh yaad rakhna,
meri rah takna...."