He is asking: if the Prophets were physically perfect and protected from sin, how come Moosaa (peace be upon him) had a speech impediment and killed a soul who had done no wrong?

Belief in the Prophets and Messengers is one of the pillars of faith, not belief in the Messengers only

Infallibility of the Prophets

Could you tell me some of the deeds that the Messenger of Allah did during the Makkan period that indicate his confidence that he was indeed the Messenger of Allah?

Why do we send blessings upon the Prophet (blessings and peace of Allah be upon him)?

Is the hadith “Verily every Prophet has allies among the Prophets, and my ally is my father and the Close Friend of my Lord, Ibraaheem” saheeh?

Ibraaheem al-Khaleel (peace be upon him) is the best of the Prophets after our Prophet Muhammad (blessings and peace of Allah be upon him), and he has nothing to do with any polytheists

Two false hadiths fabricated by some ignorant people among those who exaggerate about the Messenger of Allah (blessings and peace of Allah be upon him)

What is the name of ‘Eesa (peace be upon him) in the books of the Jews? Why is it different from the name mentioned in the Qur’an?

Who is al-Yasa‘ (peace be upon him)?