ʿUyūn akhbār al-Riḍā
Hadith 336336 - وبِإِسْنادِهِ قالَ كانَ النَّبِي صَلَّى اللهُ عَلَيْهِ وَآلِهِيَأْكُلُ الطلع وَالجمار بالتمر وَيَقُولُ إِن إبليس لعنه اللَّه يشتد غَضَبِهِ وَيَقُولُ: عاش ابْنِ آدَمِ حَتّى أَكَلَ العتيق بالَحَدِيثُ.
31-336 According to the same documentation, it is narrated that the Prophet (S) used to eat dates along with the date palm pith and said, “Indeed Satan - may God’s Curse be upon him - will get angry at the descendants of Adam and say, ‘He is eating the fresh parts and the old parts together.’”