" Tanka " (Nepali pronunciation: [ˈtʰaːŋkaː] , the 'th' as the aspirated 't' of top and the 'a' as in the word father ) ( Tibetan : ཐང་ཀ་, Nepal Bhasa : पौभा ) is a Tibetan silk painting with embroidery , usually depicting a Buddhist deity, famous scene, or mandala of