(The Messiah will never scorn to be a slave unto Allah…) [4:172].
Said al-Kalbi: “The delegation of Najran said: ‘O Muhammad, why do you insult our lord?’ He said: ‘And who is your lord?’ They said: ‘It is Jesus’. ‘Why, what do I say about him?’ he asked. They said: ‘You say he is the salve and messenger of Allah!’ He said to them: ‘It is not shameful for Jesus to be the slave of Allah’. But they said: ‘It is shameful’, and then the verse (The Messiah will never scorn to be a slave unto Allah) was revealed”.
Asbab Al-Nuzul by Al-Wahidi , trans. Mokrane Guezzou