Enforcing or encouraging others to practise the sunnah?

A Grade:  of Sahih  (Authentic) According To An-Nawawi

Haytam ibn Jamil reported: I said to Malik, "O servant of Allah, if a man has knowledge of the Sunnah, should he argue to defend it?" Malik said, "No, rather he should convey the Sunnah if they might accept it from him, otherwise he should remain silent. "

Source: Jāmi 'al-'Ulūm wal-Ḥikam 1/248