Abu Hurairah (RadhiAllah-hu ‘anhu) reported:

The Prophet (sallallahu alayhi wa sallam) said:

“It is also charity to utter a good word.”

[Sahih Al-Bukhari and Muslim]

“Surely the men who give sadaqah and the women who give sadaqah and have advanced a good loan to Allah SWT; for them it will be multiplied and for them there is a noble reward.”

–        The Holy Qur’an (57:18)