It was narrated from Hakin bin Jabr that his father said:
“I entered upon the Prophet ﷺ in his house, and he had some of this gourd. I said: ‘What is this?’ He said: ‘This is Qar’; it is Dubba’. We augment our food with it.”*

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ إِسْمَاعِيلَ بْنِ أَبِي خَالِدٍ، عَنْ حَكِيمِ بْنِ جَابِرٍ، عَنْ أَبِيهِ، قَالَ دَخَلْتُ عَلَى النَّبِيِّ ﷺ فِي بَيْتِهِ وَعِنْدَهُ هَذِهِ الدُّبَّاءُ فَقُلْتُ أَىُّ شَىْءٍ هَذَا قَالَ " هَذَا الْقَرْعُ هُوَ الدُّبَّاءُ نُكَثِّرُ بِهِ طَعَامَنَا " .