It is narrated from Sayyiduna Abu Darda (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Those who frequently curse will neither be able to bear witness nor will they be entitled to intercede on the Day of Resurrection."
Hadith Referenceالادب المفرد / كتاب / 316
Hadith Gradingالألبانی:صحيح
Hadith Takhrij«صحيح : أخرجه مسلم ، كتاب البر و الصلة والأدب : 85 ، 86 ، 2598 و أبوداؤد : 4907»
It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) said: "It is not befitting for a truthful person to curse frequently."
Hadith Referenceالادب المفرد / كتاب / 317
Hadith Gradingالألبانی:صحيح
Hadith Takhrij«صحيح : أخرجه مسلم ، كتاب البر و الصلة : 84 ، 2597»
It is narrated from Sayyiduna Hudhaifah (may Allah be pleased with him), he said: When people curse each other, the curse definitely becomes binding upon them.
Hadith Referenceالادب المفرد / كتاب / 318
Hadith Gradingالألبانی:صحيح
Hadith Takhrij«صحيح : أخرجه معمر فى جامعه : 19535 و ابن أبى شيبة : 37341 و نعيم بن حماد فى الفتن : 667/6 و البيهقي فى شعب الإيمان : 5159 و أبونعيم فى الحلية : 279/1»