Hadith 1321
۞
2. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Hisham ibn Salim from Sulayman ibn Khalid who has said the following
“Abu ‘Abd Allah (a.s.), has said, ‘Vinegar strengthens the power of understanding.’”
عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ هِشَامِ بْنِ سَالِمٍ عَنْ سُلَيْمَانَ بْنِ خَالِدٍ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) قَالَ
الْخَلُّ يَشُدُّ الْعَقْلَ .