Ash-Shama'il Al-Muhammadiyah, Book 37, Hadith 247 (In-Book)

Jabir ibn Samurah radiyallahu anhu says, I attended the assemblies of Rasoolullah sallallahu alaihe wasallam more than a hundred times, wherein the Sahaabah radiyallahu anhum recited poetry and related stories of the Jaahiliyyah (pre-Islamic era). Rasoolullah sallallahu alaihe wasallam silently listened to them (and did not forbid them). At times he smiled with them

حَدَّثَنَا عَلِيُّ بْنُ حُجْرٍ، قَالَ‏:‏ حَدَّثَنَا شَرِيكٌ، عَنْ سِمَاكِ بْنِ حَرْبٍ، عَنْ جَابِرِ بْنِ سَمُرَةَ، قَالَ‏:‏ جَالَسْتُ النَّبِيَّ صلى الله عليه وسلم، أَكْثَرَ مِنْ مِائَةِ مَرَّةٍ، وَكَانَ أَصْحَابُهُ يَتَنَاشَدُونَ الشِّعْرَ، وَيَتَذَاكَرُونَ أَشْيَاءَ مِنْ أَمْرِ الْجَاهِلِيَّةِ، وَهُوَ سَاكِتٌ وَرُبَّمَا تَبَسَّمَ مَعَهُمْ‏.‏

also referenced under: Book 36, Hadith 236 (English)