Saeed, meaning Ibn Abdul-Aziz, used to say that its best part is its beginning.
حدثنا أحمد بن عبد الواحد
كان سعيد يعني ابن عبد العزيز يقول سره أوله
No references are available.
[Its chain is sahih] Bayhaqi narrated it: 4/211, from the hadith of Abu Dawud, through this chain.