Narrated Aisha, Ummul Mu'minin:

Safiyyah, daughter of Atiyyah, said: I entered upon Aisha with some women of AbdulQays, and asked her about mixing dried dates and raisins (for drink). She replied: I used to take a handful of dried dates and a handful or raisins and put them in a vessel, and then crush them (and soak in water). Then I would give it to the Prophet (ﷺ) to drink.

حَدَّثَنَا زَيَادُ بْنُ يَحْيَى الْحَسَّانِيُّ، حَدَّثَنَا أَبُو بَحْرٍ، حَدَّثَنَا عَتَّابُ بْنُ عَبْدِ الْعَزِيزِ الْحِمَّانِيُّ، حَدَّثَتْنِي صَفِيَّةُ بِنْتُ عَطِيَّةَ، قَالَتْ دَخَلْتُ مَعَ نِسْوَةٍ مِنْ عَبْدِ الْقَيْسِ عَلَى عَائِشَةَ فَسَأَلْنَاهَا عَنِ التَّمْرِ وَالزَّبِيبِ فَقَالَتْ كُنْتُ آخُذُ قَبْضَةً مِنْ تَمْرٍ وَقَبْضَةً مِنْ زَبِيبٍ فَأُلْقِيهِ فِي إِنَاءٍ فَأَمْرُسُهُ ثُمَّ أَسْقِيهِ النَّبِيَّ صلى الله عليه وسلم ‏.‏