Mishkat al-Masabih 29 Excellent Qualities and Description of the Prophet كتاب الفضائل والشمائل 86

وَعَنْ جَابِرِ بْنِ سَمُرَةَ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ طَوِيلَ الصَّمْتِ. رَوَاهُ فِي «شرح السّنة»

Jabir b. Samura said God’s messenger was far from talkative[*]. *This is free translation expressing the meaning of the Arabic which is literally `long of silence’. The idea that he spoke only when he had good reason for doing so. Cf. Mirqat , 5:394. It is transmitted in Sharh as-sunna .