Jami` at-Tirmidhi 165
جامع الترمذي#165Sahihحَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ الْمَلِكِ بْنِ أَبِي الشَّوَارِبِ، حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ أَبِي بِشْرٍ، عَنْ بَشِيرِ بْنِ ثَابِتٍ، عَنْ حَبِيبِ بْنِ سَالِمٍ، عَنِ النُّعْمَانِ بْنِ بَشِيرٍ، قَالَ أَنَا أَعْلَمُ النَّاسِ، بِوَقْتِ هَذِهِ الصَّلاَةِ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُصَلِّيهَا لِسُقُوطِ الْقَمَرِ لِثَالِثَةٍ " .
An-Nu'man bin Bashir said:"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)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 2:17