Al-Kāfi - Volume 6 > The Footgear
Hadith #10

عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ غَيْرِ وَاحِدٍ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) أَنَّهُ كَرِهَ عَقْدَ شِرَاكِ النَّعْلِ وَ أَخَذَ نَعْلَ أَحَدِهِمْ وَ حَلَّ شِرَاكَهَا .

10. Ali ibn Ibrahim has narrated from his father from ibn abu ‘Umayr from more than one person who has said the following: “Abu ‘Abd Allah, ‘Alayhi al-Salam, disliked tying of shoelaces. He (the Imam) took the sandals of one of them and opened its laces.”