Punishment of cursing a person who does not deserve it

Thawāb al-Aʿmāl wa ʿiqāb al-Aʿmāl · Volume 1 · Section 115 · 1 narrations

Hadith 1056

Whenever a person curses, this curse travels till it gets a person who is worthy of it. If it does not get such a person, it returns to its source.”