Sunan Ibn Majah
1331
Sahih+3

It was narrated that ‘Abdullah bin ‘Amr said:“The Messenger of Allah (ﷺ) said: ‘Do not be like so-and-so, who used to pray voluntary night prayers then stopped praying voluntary night prayers.”

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi