Silence is a part of wisdom. It is a sign of every virtue

There are two kinds of silence: 

(i) general and relative; (ii) particular and absolute. 

Relative silence means to refrain from talking to people in excess to what is absolutely required. This kind of silence is necessary for the spiritual traveler at every stage. It is commendable for others also. 

Imam Ja'far Sadiq has said: 

"Silence is the way of the lovers of Allah because Allah likes it. It is the style of the Prophets and the habit of the chosen people."

Imam Ja'far Sadiq referred to this kind of silence when he said: "Our partisans (Shi'ah) are dumb." A report is mentioned in the Misbahush Shari'ah according to which 

According to another report Imam Ja'far Sidiq said:

"Silence is a part of wisdom. It is a sign of every virtue."

Particular and absolute silence means to refrain from talking during verbal recollection of Allah.