The word(s) "messengership" appears 2 time(s) in 2 verse(s) in Quran in Mohsin Khan translation.

(1) It may be that you (O Muhammad صلى الله عليه وسلم) are going to kill yourself with grief, that they do not become believers [in your Risalah (messengership) i.e. in your Message of Islamic Monotheism].

(سورة الشعراء, Ash-Shu'araa, Chapter #26, Verse #3)
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(2) So (O Muhammad صلى الله عليه وسلم) obey you not the deniers [(of Islamic Monotheism - those who belie the Verses of Allah), the Oneness of Allah, and the messengership of Muhammad صلى الله عليه وسلم]

(سورة القلم, Al-Qalam, Chapter #68, Verse #8)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)