Habib bin Salm al-Ansari حبيب بن سالم الأنصاري مولى · The Book on Salat (Prayer)

"I am the most knowledgeable among the people about the prescribed time of this prayer: Allah's Messenger would pray it when the moon set on the third (of the month)."

A similar narration (from another chain linking to) this chain is also reported.