«ليس على رجل نذر فيما لا يملك ولعن المؤمن كقتله ومن قتل نفسه بشيء عذب به يوم القيامة ومن حلف بملة سوى الإسلام كاذبا فهو كما قال ومن قذف مؤمنا بكفر فهو كقتله»
The Prophet (peace and blessings be upon him) said:
"A vow is not binding on a man in what he does not own; cursing a believer is like killing him; whoever kills himself with something will be punished with that very thing on the Day of Resurrection; whoever swears falsely by a religion other than Islam will be just as he said; and whoever accuses a believer of disbelief, that is like killing him."
Hadith Referenceصحیح الجامع الصغیر / حرف اللام / 5404