To raise hands during the Khutba (religious talk)

Narrated Anas:

While the Prophet was delivering the Khutba on a Friday, a man stood up and said, "O, Allah's Apostle! The livestock and the sheep are dying, so pray to Allah for rain." So he (the Prophet) raised both his hands and invoked Allah (for it).

حَدَّثَنَا مُسَدَّدٌ، قَالَ حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ عَبْدِ الْعَزِيزِ، عَنْ أَنَسٍ،. وَعَنْ يُونُسَ، عَنْ ثَابِتٍ، عَنْ أَنَسٍ، قَالَ بَيْنَمَا النَّبِيُّ ﷺ يَخْطُبُ يَوْمَ الْجُمُعَةِ إِذْ قَامَ رَجُلٌ فَقَالَ يَا رَسُولَ اللَّهِ، هَلَكَ الْكُرَاعُ، وَهَلَكَ الشَّاءُ، فَادْعُ اللَّهَ أَنْ يَسْقِيَنَا. فَمَدَّ يَدَيْهِ وَدَعَا.