The Messenger of Allah ﷺ said, "Cursed is the one who harms a believer or plots against him."
حدثنا عبد بن حميد حدثنا زيد بن الحباب العكلي حدثني أبو سلمة الكندي حدثنا فرقد السبخي عن مرة بن شراحيل الهمداني وهو الطيب
قال رسول الله ﷺ ملعون من ضار مؤمنا أو مكر به
No references are available.
Its chain is daif. It was also narrated by Ahmad bin Ali bin Saeed Marwazi in Musnad Abu Bakr Siddiq, no. 100, through Zayd bin Hubab, by the same route. Farqad Sabakhi is daif and Abu Salamah Kindi is unknown (as stated in Taqrib).