Is it true that the Prophet, may God's prayers and peace be upon him, used to recite the entire Qur'an in a second while riding his horse, by analogy with what was stated in Sahih Al-Bukhari about David's, peace be upon him, recitation of the Zabur?

Al-Bukhari narrated that the Qur'an (Zabur) was made easy for David (peace be upon him), and he would recite it all in a short period, not exceeding the time it took to saddle his mount. This was one of the miracles Allah bestowed upon him, indicating the blessing of time for whomever of His servants Allah wills.

It is not necessary for our Prophet Muhammad (peace be upon him) to have all the specific virtues that were granted to other prophets, even though he is the best of messengers. The claim that the Prophet Muhammad (peace be upon him) recited the entire Qur'an while riding his mount, or "in a second," is false and without proof.