Book 15, Number 15.8.36: Section: Dhikr (Remembrance) ofAllah, the Blessed and Exalted
Yahya related to me from Malik that Zayd ibn Aslam used to say, "No-one makes a dua without one of three things happening. Either it is answered, or it is stored up for him, or wrong actions are atoned for by it."
Islam Under the light of sahih hadith; this collection is from 1- Sahih Al-Bukhari 2- Sahih Muslim 3- Sunan Abu-Dawud 4- Malik's Muwatta Full collections download available at: http://steptowardssuccess.blogspot.com/2011/04/hadith-collection-in-english-for.html https://drive.google.com/folderview?id=0B5J3PhWBX96mMzBkNmVkODItZjM4ZC00Mzg1LTlmOGQtMjliZWZlZmM0YTVk&usp=sharing