Answered by Ustadh Salman Younas
Question: Can someone donate his/her Qurbani money to help build a new mosque?
Answer: wa `alaykum assalam
No, one cannot give the money used towards a qurbani (slaughtering) to the mosque. This will not discharge an individuals obligation to actually slaughter an animal. This obligation has been established in the primary texts of the Qur’an and hadith and therefore must be carried out in the form prescribed in order for the obligation to be fulfilled.
You may, of course, give the skin of the slaughtered animal to the mosque who may then sell it.
Checked & Approved by Faraz Rabbani