Chabad.org — English translation + Rashi
Torah Temimah: “לא ישאירו ממנו עד בקר” — the leftover prohibition applies to Pesach Sheni as to the first.
English: “They shall not leave any of it until morning” — as with the first.
Shared negative commandments — the second offering inherits the core prohibitions of the first.
What may not remain overnight on the fourteenth of Nisan may not remain overnight on the fourteenth of Iyar.