Tauheed (توحید) is the Very Foundation of Islam but unfortunately during the Downfall of Ummat e Muslima the concept of Tauheed has been very narrowed like many other concepts of Islam
زندہ قوت تھی زمانے میں یہ توحید کبھی
اب کیا ہے فقط ایک مسلہ علم کلام
Dr Israr Ahmed discusses in this lecture Tauheed that effects the Life of a Muslim and is not only based on his Aqeeda (Dogma) but also His Amaal (Actions)
For more detail
Quran Academy 36-K Model Town Lahore Pakistan
Phone : 92-42-35869501 , 92-42-35869503
http://www.tanzeem.org