35 points on the etiquette of dua
MuslimVillage.com (press release) (blog)
For e.g. He should say, O Allah! I had performed so & so deed solely for Your pleasure. O Allah! accept my Dua due to the barakah of that deed. (Muslim, Tirmidhi, Abu Dawud). 4- To make Dua whilst one is pure & clean. (Tirmidhi, Abu Dawud, Ibn Majah, ...