الكافي- ط الاسلامية, volume 7, page 322

From him, from his father, from Abdullah Bin Al Mugheira, from Abdullah Bin Sinan, (It has been narrated) from Abu Abdullah asws regarding a man who struck a man with a stick upon his head, so his tongue became heavy. So he asws said: ‘There would be presented to him the letter of the alphabet, so whatever he pronounces eloquently from it, and whatever he cannot pronounce eloquently from it, the wergild would be (based) upon it, and these are twenty nine letters’.

Translation: HubeAli — attributed by Thaqalayn·The Arabic above is the original.

From him, from his father, and Muhammad Bin Yahya, from Ahmad Bin Muhammad, both together from Ibn Mahboub, from Abu Ayoub, from Suleyman Bin Khalid, (It has been narrated) from Abu Abdullah asws having said with regards to a man who struck a man in his ear with a bone, so he claimed that he cannot hear. He asws said: ‘He would be placed under surveillance and would be awaited with for a year. So if he hears, or two men testify against him that he can hear, or else he would be made to swear an oath, and he would be given the wergild’. It was said, ‘O Amir Al-Momineen asws ! So if it was discovered afterwards that he can hear?’ He asws said: ‘If Allah azwj Mighty and Majestic Returns his hearing, I asws do not see anything upon him’.

Translation: HubeAli — attributed by Thaqalayn·The Arabic above is the original.

Ali, from his father, from Ibn Mahboub, from Ali Bin Abu Hamza, from Abu Baseer, (It has been narrated) from Abu Abdullah asws regarding a man was hit in his ear, so he claimed that one of his ears is deficient from hearing anything. He asws said: ‘The struck ear would be covered up with an intense covering, and the correct ear would be kept open. So the bell would be sounded towards his face and it would be said to him, ‘Listen’. So when the sound is hidden to him, its place would be noted. Then it (the bell) would be sounded from behind him, and it would be said to him, ‘Listen’. So when the sound is hidden from him its place would be noted. Then it would be measured what is between the two. So if it was the same, it would be known that he is speaking the truth. Then he would be seized by it from his right. Then it (the bell) would be sounded until the sound is hidden from him. Then its place would be noted. Then he would be seized by it from his left. So it (the bell) would be sounded until the sound is hidden from him. Then its place would be noted. There it would be measured what is between the two. So if it was the same, it would be known that he is speaking the truth. He asws said: ‘Then his damaged ear would be opened up, and the other one would be closed with a new covering. Then the bell would be struck from in front of him. Then the sounds would be hidden from him, and he would be dealt with just as he had been dealt with the first time around, with his healthy ear. Then to find the difference of the hearing (abilities) of both ears to calculate a fair compensation on the basis of the differences that may have happened between the two ears.

Translation: HubeAli — attributed by Thaqalayn·The Arabic above is the original.

Ali Bin Ibrahim, from his father, from Ibn Abu Umeyr, from Hammad, from Al Halby, (It has been narrated) from Abu Abdullah asws having said: ‘When the man is struck upon his head, so his tongues becomes heavy, the letters of the alphabet would be presented to him. He would read, then the wergild would be divided upon the letters of the alphabet. So whatever he could not pronounce eloquently with the speech, the wergild would be quantified by the measurement from that’.

Translation: HubeAli — attributed by Thaqalayn·The Arabic above is the original.