It is like an old woman throwing a pot of water out looking at the water in the clouds
The above is an Indian proverb meaning some innocent people foolishly forego what is preserved for future use when they find that something more useful useful is likely to be available in the near future which may not be available (leaving something at hand in anticipation of something which is likely to happen and of use in the future).
I would like to know a similar idiom in English.
(I think it is not a duplicate as I searched for similar proberbs but could not find out. However, if anybody finds out and leave a comment, I will delete the post instantly)