He,(PBUH)warned them against harming thebelievers

‘ “The Messenger of Al- lah, sallallaahu ‘alayhi wa sallam, ascended the pulpit and called aloud saying: “O you who have believed with your tongues, but [real] faith has not found its way to your hearts, do not harm the believers, do not belittle or reprimand the believers and do not seek to expose their hidden mis- takes. Whoever tries to search or expose the mistakes which are hidden and private of his fellow Muslim, Allah will expose his hidden mis- takes, and whoever Allah does this to him, Allah would expose him even within the corner of his own home.””1

«Indeed, those who like that immorality [unlawful sexual relations] should be spread [or publicized] among those who have believed will have a painful punishment in this world and the Hereafter. And Allah knows [the hidden aspects of all things: what is beneficial and what is harmful] and you do not know.»

“The Messenger of Allah, sallallaahu ‘alayhi wa sallam, commanded us to spend in charity, and we were laborers who were hired to carry people’s belongings for a fee and would spend from our wages or spend all our wages. Abu ‘Aqeel spent half a Saa’ (a measure of weight equals approximately 3 kg), and another person donated slightly more than him. The hypocrites said: ‘Allah is not in need for the charity of this man, and the second person donated only to show off.

«Those who criticize the contributors among the believers concerning [their] charities and [criticize] the ones who find nothing [to spend] except their effort, so they ridicule them, Allah will ridicule them, and they will have a painful punishment»