Mishkat al-Masabih 21 Foods كتاب الأطعمة 126

وَعَنِ ابْنِ عُمَرَ: أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ نهى عَن الدُّبَّاء والحنتم والمرفت وَالنَّقِيرِ وَأَمَرَ أَنْ يُنْبَذَ فِي أَسْقِيَةِ الْأَدَمِ. رَوَاهُ مُسلم

Ibn ‘Umar said God’s messenger forbade the use of pumpkins, [i.e. he forbade their use as containers.] green jars, vessels smeared with pitch and hollow stumps, giving command that dates should be steeped in skins. Muslim transmitted it.