Allāh, Glorified and Exalted is He, says in His Book:
{On the Day when their tongues, their hands, and their legs or feet will bear witness against them as to what they used to do.} [Sūrah An-Nūr 24:24]
{This Day, We shall seal up their mouths, and their hands will speak to Us, and their legs will bear witness to what they used to earn.} [Surah Yāsīn 36:65]
The great mufassir, Imam Abū Jaʿfar Muḥammad ibn Jarīr al-Ṭabarī said: "It is said that one's left thigh will be the first to bear the witness."[1]
{Till, when they reach it (Hell-fire), their hearing (ears) and their eyes, and their skins will testify against them as to what they used to do. And they will say to their skins, "Why do you testify against us?" They will say: "Allah has caused us to speak, as He causes all things to speak, and He created you the first time, and to Him you are made to return."} [Sūrah Fussilat 41:20-21]
The noble Shaykh 'Abdul-'Azīz Ar-Rājihī, may Allāh preserve him, mentions: "The body parts, such as the ears, the eyes, and the skin will bear witness against the person on the Day of Judgement. It is therefore a must that the individual is very cautious because his body parts are going to be the witnesses."[2]
The noble Shaykh 'Abdurrahmān Ibn Nāsir As-Si'dī, may Allāh have mercy upon him, states in his famous tafsīr: "He (Allāh) has specifically mentioned these three body parts (the ears, the eyes, and the skins) because most of the sins occur either through them or on accord of them."[3]
Sources:
[1] Tafsīr At-Tabarī, Vol. 22, Page 24. Sūrah Yāsīn 36, Āyah 65.
[2] The Shaykh's official Twitter account @AbduazizCenter on 22/08/2016, 2:37pm.
[3] Tafsīr As-Si'di. Sūrah Fussilat 41, Āyah 20.
Compiled and translated by 'Abdurrahīm Ibn Muhammad Al-Hadhramī.
Published on Salafi-Dawah.com.
Please note that the translation of the Āyāt have been taken from the translation of Shayk Muhammad Taqiuddīn Al-Hilālī and Shaykh Muhammad Muhsin Khān, may Allāh reward them immensely.
:يقول الله سبحانه وتعالى في كتابه
يَوْمَ تَشْهَدُ عَلَيْهِمْ أَلْسِنَتُهُمْ وَأَيْدِيهِمْ وَأَرْجُلُهُمْ بِمَا كَانُوا يَعْمَلُونَ
(سورة النور)
الْيَوْمَ نَخْتِمُ عَلَىٰ أَفْوَاهِهِمْ وَتُكَلِّمُنَا أَيْدِيهِمْ وَتَشْهَدُ أَرْجُلُهُمْ بِمَا كَانُوا يَكْسِبُونَ
(سورة يس)
حَتَّىٰ إِذَا مَا جَاءُوهَا شَهِدَ عَلَيْهِمْ سَمْعُهُمْ وَأَبْصَارُهُمْ وَجُلُودُهُمْ بِمَا كَانُوا يَعْمَلُونَ. وَقَالُوا لِجُلُودِهِمْ لِمَ شَهِدْتُمْ عَلَيْنَا ۖ قَالُوا أَنْطَقَنَا اللَّهُ الَّذِي أَنْطَقَ كُلَّ شَيْءٍ وَهُوَ خَلَقَكُمْ أَوَّلَ مَرَّةٍ وَإِلَيْهِ تُرْجَعُونَ
(سورة فصلت)
"يقول الشيخ عبد العزيز الراجحي حفظه الله في حسابه الرسمي في تويتر: "الإنسان تشهد عليه الجوارح يوم القيامة مثل السمع والبصر والجلد، فينبغي للإنسان أن يحذر، لأن جوارحه هي الشهود
وقال العلامة الشيخ عبد الرحمن بن ناصر السعدي رحمه الله في تفسيره: "وخص هذه الأعضاء الثلاثة،(السمع والبصر والجلد) لأن أكثر الذنوب، إنما تقع بها، أو بسببها." تفسير سورة فصلت