The book is Ahsanu’l Wiáā li Ādābi’d Duáā [1] by Mawlānā Naqī Álī Khān raĎiyAllāhu ánhū. The gloss on this book is penned by his son Imām Aĥmed RiĎā Khān and named: Dhayl al-Muddáā li Aĥsani’l Wiáā.[2] The book basically discusses Duáā or prayer, its requirements, etiquette and other related things. Usually adab of duáā or the etiquette of duáā is found as a preface in prayer books. This book claims a unique spot in that it is devoted to the subject. It is a booklet of about a 100 pages, a5 in size. It consists of ten chapters, an appendix and a concluding article on the method of Šalāt al-Ĥājah [prayers for succor]. --- footnotes: 1. A most beautiful receptacle, describing etiquette of duáā. 2. An appendix to the seeker of ‘the most beautiful receptacle'.