If Speech is Silver, Then Silence is Gold – Ibnul Mubaarak [rahimahullaah] Explains
Ibnul Mubaarak [rahimahullaah] was asked about the statement of Luqmaan [alayhis-salaam] to his son: ‘’If speech is from silver, then silence is from gold.” So he said: ‘’It means that if speech in obedience to Allaah is from silver, then silence [in order to refrain from] disobedience to Allaah is gold.”
[Jaami-ul Uloom Wal-Hikam: page: 155]