Narrated Dukayn ibn Sa'id al-Muzani:

We came to the Prophet (ﷺ) and asked him for some corn. He said: Go, Umar, and give them. He ascended with us a room upstairs, took a key from his apartment and opened it.

حَدَّثَنَا عَبْدُ الرَّحِيمِ بْنُ مُطَرِّفٍ الرُّؤَاسِيُّ، حَدَّثَنَا عِيسَى، عَنْ إِسْمَاعِيلَ، عَنْ قَيْسٍ، عَنْ دُكَيْنِ بْنِ سَعِيدٍ الْمُزَنِيِّ، قَالَ أَتَيْنَا النَّبِيَّ صلى الله عليه وسلم فَسَأَلْنَاهُ الطَّعَامَ فَقَالَ ‏

‏ يَا عُمَرُ اذْهَبْ فَأَعْطِهِمْ ‏

‏ ‏.‏ فَارْتَقَى بِنَا إِلَى عِلِّيَّةٍ فَأَخَذَ الْمِفْتَاحَ مِنْ حُجْزَتِهِ فَفَتَحَ ‏.‏