question #3 Sahih al-Bukhari 7531, Book 97, Hadith 156 : What should be the response to claims that the Prophet Muhammad (ﷺ) concealed parts of the Divine Revelation?

Whoever tells you that the Prophet (ﷺ) concealed something of the Divine Inspiration, do not believe
him, for Allah said: ‘O Apostle Muhammad! Proclaim (the Message) which has been sent down to you
from your Lord, and if you do it not, then you have not conveyed His Message.’ (5.67)