I found this post by chance and I am quoting it here because it contains 10 really great Sahir songs with good information about them. They are not my top 10 but 9 of them are very high on my list of favourite songs. One I have never heard - Pighla sona door gagan pe.
I will just list my 3 top most favourite songs from this list:
Tum apna ranj-o-gham
Man re tu kaahe na dheer dhare
Aage bhi jaane na tu
Please feel free to add your favourite songs in comments. I always love to find or be reminded of great Hindi songs.