بسم الله الرحمن الرحيم
Q. What is the ruling on raising the hands when the Imām is delivering the sermon during the Friday prayer?
A. Raising the hands when the Imām is delivering the sermon on Friday is also not legislated; and the Companions, may Allāh be pleased with them, rebuked Bishr bin Marwān when he raised his hands during the Friday sermon [1].
However, the supplication during the prayer for rain is an exception from this, because it has been confirmed from the Prophet that he raised his hands and asked Allāh, the Most High for rain, and that was during the Friday sermon, and the people raised their hands with him. But other than this, it is not correct to raise the hands at the time of supplication during the Friday sermon.
(Fatāwā Arkān al-Islām of Ibn ‘Uthaymīn, page. 393. See also vol. 2, pg. 557 of the English darussalam print)
[1]
عَنْ عُمَارَةَ، بْنِ رُؤَيْبَةَ قَالَ رَأَى بِشْرَ بْنَ مَرْوَانَ عَلَى الْمِنْبَرِ رَافِعًا يَدَيْهِ فَقَالَ قَبَّحَ اللَّهُ هَاتَيْنِ الْيَدَيْنِ لَقَدْ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم مَا يَزِيدُ عَلَى أَنْ يَقُولَ بِيَدِهِ هَكَذَا . وَأَشَارَ بِإِصْبَعِهِ الْمُسَبِّحَةِ .
Umārah bin Ruwaibah said he saw Bishr bin Marwān on the pulpit raising his hands and said:
Oh Allāh, disfigure these hands! I have seen Allāh’s Messenger (ﷺ) gesture no more than this with his hands; and he pointed with his forefinger. (Sahīh Muslim 873)
fawaaids.com 