The believers say some phrases, such as haqqan truly), nashhad (we bear
witness)and sometimes yaa Allaah (O Allaah), when the imaam  is reciting du’aa’ al-qunoot . Is this permissible according to Islam? Is it
permissible to raise the hands during al-qunoot in Fajr or Witr? Is it permissible to raise the hands and say Takbeer out loud behind the imaam for every Takbeer in the janaazah (funeral) prayer, and in the case of the seven and five takbeers in the Eid prayers?

Praise be to Allaah. 

It
is prescribed to say Ameen during the du’aa’ al-qunoot, and when the
imaam praises Allaah it is sufficient to remain silent, but if one says
Subhaanaka (Glory be to You) or Subhaanahu (glory be to Him), this is
OK. One should raise the hands during the du’aa’ al-qunoot and when
saying Takbeer during the janaazah and Eid prayers, because evidence
to this effect has been narrated.

 And
Allaah is the Source of strength. May Allaah bless our Prophet Muhammad
and his family and companions, and grant them peace.