It is narrated from Sayyiduna Abdullah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: A believer is neither one who taunts, nor one who curses, nor one who uses obscene language, nor one who is foul-mouthed.
Hadith Referenceالفتح الربانی / كتاب المدح والدم / 10096
Hadith Gradingمحدثین:صحیح
Hadith Takhrij«اسناده صحيح، أخرجه ابويعلي: 5379، والطبراني في الكبير : 10483، والبيھقي: 10/ 193 ، (انظر مسند أحمد ترقيم الرسالة: 3948 ترقیم بيت الأفكار الدولية: 3948»
Brief Explanation
Benefits: … Dignity, seriousness, composure, and calmness are the adornments of people of faith. In their conduct, mannerisms, interactions, speech and actions—in short, in everything—there is moderation. Whereas the blameworthy traits mentioned in the hadith are matters contrary to faith and moderation, therefore a believer should avoid them.