According to the Hanafi and some other schools Nafilah salah (Arabic: صلاة نفل) is a type of optional salah in Islam. Like Sunnah salat, they are not considered obligatory but are thought to confer extra benefit on the person performing them. For example, offering Duha prayers.
The time for the Ishraq prayer begins ten to twenty minutes after sunrise and consists of two Raka'ahs. Praying ishraq is considered to yield greater rewards than performing the lesser Umrah according to some traditions.“According to majority of scholars of Hadith and Fiqh, Duha Prayer and Al-Ishraq Prayer are all names of the same salah (ritual Prayer). It is a recommended Prayer without any fixed number of raka'ahs, and its time proper starts a little after sun rise (approximately fifteen minutes after sunrise) and extends up to the time of the declining of the sun from the meridian.
A minority of scholars[who?], however, have made a distinction between Al-Ishraq Prayer and Duha Prayer. According to them, Al-Ishraq Prayer is done after sun rise (around fifteen minutes after) while Duha Prayer is done much later.