Sunan Ibn Majah, Volume 3, Book 21, Hadith 2650 (DarusSalam) ⓘ
It was narrated from Ibn 'Abbas that the Messenger of Allah said: “Teeth are all the same; the incisor and the molar are the same.”
حَدَّثَنَا الْعَبَّاسُ بْنُ عَبْدِ الْعَظِيمِ الْعَنْبَرِيُّ، حَدَّثَنَا عَبْدُ الصَّمَدِ بْنُ عَبْدِ الْوَارِثِ، حَدَّثَنِي شُعْبَةُ، عَنْ قَتَادَةَ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " الأَسْنَانُ سَوَاءٌ الثَّنِيَّةُ وَالضِّرْسُ سَوَاءٌ " .
also referenced under: Hadith 2650 (Reference) & Book 21, Hadith 2752 (In-Book)