526. Commentary: Despite the fact that Muhammad sallallahu alayhi wa sallam was appointed to the exalted rank of Prophethood, he was the foremost believer and affirmer of Allah’s oneness and of his own Prophethood. In the Noble Qur’an it is stated: «آمَنَالرَّسُولُبِمَاأُنزِلَإِلَيْهِمِنرَّبِّهِوَالْمُؤْمِنُونَ ۚ»[بقره 285] “The Messenger has believed in what was revealed to him from his Lord, and [so have] the believers.”
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 526