Al-Adab Al-Mufrad, Book 30, Hadith 551 (English) ⓘ

Salih, the garment-seller, reported that his grandmother said, "I saw 'Ali, may Allah be pleased with him, buy fates for a dirham and put them in his blanket. I said to him (or a man said to him), 'I will carry it for you, Amir al-Mu'minin.' He said, 'No, the father of the family is the one who is the most entitled to carry it.'"

حَدَّثَنَا مُوسَى بْنُ بَحْرٍ، قَالَ‏:‏ حَدَّثَنَا عَلِيُّ بْنُ هَاشِمِ بْنِ الْبَرِيدِ، قَالَ‏:‏ حَدَّثَنَا صَالِحٌ بَيَّاعُ الأَكْسِيَةِ، عَنْ جَدَّتِهِ قَالَتْ‏:‏ رَأَيْتُ عَلِيًّا رَضِيَ اللَّهُ عَنْهُ اشْتَرَى تَمْرًا بِدِرْهَمٍ، فَحَمَلَهُ فِي مِلْحَفَتِهِ، فَقُلْتُ لَهُ، أَوْ قَالَ لَهُ رَجُلٌ‏:‏ أَحْمِلُ عَنْكَ يَا أَمِيرَ الْمُؤْمِنِينَ‏؟‏ قَالَ‏:‏ لاَ، أَبُو الْعِيَالِ أَحَقُّ أَنْ يَحْمِلَ‏.‏