It is narrated from Sayyiduna Abu Sirmah al-Ansari (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever harms someone, Allah will harm him, and whoever causes someone hardship, Allah will cause him hardship."
Hadith Referenceالمعجم الكبير للطبراني / مسند من يعرف بالكنى / 19032