The strong warning should not be understood to mean that every lawful everyday conversation is sinful. Comforting family, encouraging someone, teaching, asking necessary questions, or giving work-related advice may also serve good purposes.
Quarrels, slander, mockery, and unverified rumors are clear examples of misuse. Three questions help before speaking:
1. Is it true?
2. Is it needed or helpful?
3. Is the manner appropriate?
ذِكْرُ اللَّهِ forms an iḍāfah construction: “remembrance of Allah.”