Spending the money donated to a Masjid

Q: A group of people in the Masjid of Ibn Majid, Zhahrat-ul-Badi`ah District, raised a sum of money after two Jumu`ah (Friday) Prayers to buy air-conditioners for the Masjid. The sum amounts to about fifty thousand riyals, but was insufficient to meet the purpose. One of the people submitted a petition to His Royal Highness Prince `Abdullah ibn `Abdul-`Aziz, the crown prince (may Allah protect him). Thereupon, his highness agreed to undertake all the expenses estimated to 300 thousand riyals. Now, the money raised from the people (Part No. 6; Page No. 239) is still with us and we want to allocate it for the facilities of the Masjid such as buying clocks, stands for Mus-hafs (copies of the Qur'an), and curtains for separating the men's area from the women's and the like.Is it permissible to allocate the money for another purpose other than the one for which it was collected? Is this conditional upon the agreement of donators, knowing that we cannot identify them? If the answer is in the negative, how should we deal with the sum of money that was raised?Kindly, give us your Fatwa in this regard.

A: It is obligatory to spend this money on the purpose for which it was collected i.e. Buying air-conditioners even if for another Masjid that needs them, so that the purpose of the donators is fulfilled.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.