in vain

to no avail; "he looked for her in vain"; "the city fathers tried vainly to find a solution"

कोई भी भिकारी विद्या सागर से व्यर्थ में भिक नहीं मांगता था.

And We rained down on them a shower (of stones). How ruinous was the rain that fell on those who had been warned (but warned in vain)!