When the verse: ” We did not send you but as a mercy to all the nations” was revealed, the prophet asked Gabriel: have you received any of this mercy? Gabriel replied: yes. I was worried about the consequences and my destiny. But thanks to a Quranic verse that was revealed to you, I understood that I will have a safe destiny.
Majma’ al-Bayan, explanations under Sura al-Anbiya’, verse: 108