Making du’aa’ together for one who has given charity

This way of making du’aa’ is not appropriate, because it is bid’ah. Making du’aa’ for the donor without putting one’s hands on the wealth given in charity and without raising voices in unison in the manner described is something that is prescribed in sharee’ah, because the Prophet (peace and blessings of Allaah be upon him) said: “Whoever does you a favour, then return it in kind; if you cannot do that then keep making du’aa’ for him until that you think that you have returned the favour.” (Narrated by Abu Dawood and al-Nasaa’i with a saheeh isnaad).