Indus valley is more civilized and creative land in this world where thousands philosophers, Writers, Muffasirs & Mohadis, have been lived in each and every era. So is in the field of Islamic Uloom. One of such Uloom is “belief"(aqaaid). Those scholars have also worked in this field of knowledge. In this paper the introduction of the work of such Sindhi Scholars is presented during 1st to 13th century.In this field of knowledge Sindhi scholars have worked in each and every era and in almost every language used in that period in Sub-continent. Like Arabic, Persian and Sindhi.It needs more to find out all the work done in this field; this is only to start over.In sha Allah it will be continued the work of some prominent scholars like;Makhdoom Muhammad Hashim Thattvi, Qazi iben e Yousif, Allama Abdullah Thattvi, Allama Jaffer Boobkani, sheikh Essa. Jundullah patai, Shaikh Muhammad Hayat Sindhi, Makhdoom Abul Hassan "Sagir" Sindhi and others.