One of my all time favourite songs. Beautifully sung by Musarrat Nazir. Awesome lyrics:

chale to kat hi jeyga safar
ahista ahista

hum uske paas jate the
magar ahista ahista

abi taaron se khelo
chand ki kirno se ithlao
milegi uske chehre ki sahar
ahista ahista

(ithlao – play with)

dareecho ko to dekho
chilmanon ke raaz to samjho
uthayenge parda haye baam-o-dar
ahista ahista

(dareecho – ?,chilmanon – ?, baam – housetop or roof, dar – door)

yun hi ik roz apne dil ka qissa b suna dena
khita ahista ahista
nazar ahista ahista

(khita – to address)

chale to kat hi jeyga safar
ahista ahista