Quran and hadith...

[myislamislove]

Say: Do not think that your Islam is a favour to me.
Nay, but Allah conferred a favour on you because He has led you to the faith."

[Quran 49:17]
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“Whoever is kind, Allah will be kind to him;
therefore be kind to man on the earth.
He Who is in heaven will show mercy on you.”

– Muhammad (pbuh)