Spending
Believers, when you seek private counsel with the Messenger, offer charity before speaking with him. This is better and purer for you. But if you lack the means, Allah is forgiving and merciful.
58:12O ye who believe! When ye hold conference with the messenger, offer an alms before your conference. That is better and purer for you. But if ye cannot find (the wherewithal) then lo! Allah is Forgiving, Merciful.