In another version Ibn Abbas said: Earnest supplication should be made like this: he raised his hand and made his palms in the direction of his face.
Explanation & Benefits
Shaykh Umar Farooq Saeedi
As is established in the supplication for rain (du'a al-istisqa).
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 1490