Some centres for Qur’aan memorization write letters to some businessmen asking them to support the centre, and they say in their letter that they will put the name of the store on their papers and announce it as a kind of advertisement for them. Is that permissible?

Praise be to Allaah. 

We
put this question to Shaykh Muhammad ibn Saalih al-‘Uthaymeen, may Allaah
preserve him, who answered as follows:

There is the risk that this may
make worldly interests the motive for donating, so they should not mention
this phrase (in the letter).