بسم الله الرحمن الرحيم
Q: Some people raise their hands while supplicating between the adhan and iqaamah, is this practice reported (in the text)?
A: That is incorporated under the generality of supplication. It is from its etiquette and from its recommended affairs. Raising the hands while facing the qiblah (in supplication) has no preventative inshaa’llah.
Translated by Najeeb Al Anjelesi
Source: http://ar.alnahj.net/fatwa/134