Ja'far bin Iyas · 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.

The Prophet (S) said: "Salat in the night is two by two. So when you fear the dawn (is near) then make it odd by one, and make that the last of your Salat odd."