قالَ رَسُولُ اللهِ(ص): قَالَ اللهُ تَبَارَكَ وَتَعَالى: مَنْ أَهَانَ لِي وَلِيّاً فَقَدْ أَرْصَدَ لِمُحَارَبَتِي
The messenger of Allah (pbuh) said: God has said: whoever belittles a friend of mine, has prepared themselves to fight with me.
source : erfan.ir