What is "akashlina"

"Akashlina" (Bangala:আকাশলীনা) is one of the most celebrated and recited poem of poet Jibanananda Das along with his another sophisticated poem Banalata Sen ( Bangala : বনলতা সেন ).It was composed by the poet in the late Thirties of 20th century when the poet was in great distress with his wife.It was first published in 1940 in a verse collection named Satti Tarar Timir.