A lost song - Dhana dhanya sasialatha

I've been searching for 'Dhana dhanya sasialatha', a Malayalam version of a Bengali song for several years now. My late mother used to sing it but no one I asked seems to remember it now. 

The song is an adaptation of  a Bengali original written by Dwijendralal Roy in the late 19th or early 20th century and which is still popular. 

The Malayalam version seems to be lost. Some people say it used to be played on All India Radio in the 1950s and 60s when Kerala state was newly formed. Others say it used to be sung in school assemblies even till the 1970s. But I haven't been able to get the lyrics or a recording or a reference. 

If you come across it or know of it, do let me know, it would be wonderful to recapture the memoty. Thanks!

Here's a video with both versions.