Abu Rafi'(RAA) narrated that The Messenger of Allah (ﷺ) said:
"I do not break a covenant or imprison messengers." Related by Abu Dawud and An-Nasa'i. Ibn Hibban graded it as Sahih. (FR)
English reference (FR): Book 11, Hadith 1344 (FR)
Arabic reference (FR): Book 11, Hadith 1318 (FR)