Entries on خلل in 13 Arabic dictionaries by the authors Abū ʿUbayd al-Qāsim bin Salām al-Harawī, Gharīb al-Ḥadīth, Al-Fayyūmī, Al-Miṣbāḥ al-Munīr fī Gharīb al-Sharḥ al-Kabīr, Abū Mūsā al-Madīnī, al-Majmūʿ al-Mughīth fī Gharībay al-Qurʾān wa-l-Ḥadīth, and 10 more