It's a common term used to convey good wishes, hopes, or prayers for someone's well-being, success, or happiness.
Here are some examples:
* "Aashamsa kalikkunnu" (ആശംസ കലിക്കുന്നു) - "May blessings be upon you."
* "Neeke aashamsangal" (നീക്ക് ആശംസകൾ) - "Blessings to you."
* "Aashamsangal ethraanu" (ആശംസകൾ എത്രയാണ്) - "Best wishes."