Mans limbs and organs giving evidence after resurrection
In the name of Allah, the most Beneficent, the most Merciful.
Allah (SWA) in the Holy Quran has said “And (remind them of) the day when Allah’s enemies will be mustered towards the Fire. So they will be kept under control until when they will come to it, their ears and their eyes and their skins will testify against them about what they used to do. And they will say to their skins “Why did you testify against us?” They (the skins) will say, “We were made to speak by Allah….” (Surah Fussilat v.18-v.21)
Saaiduna Anas Radiallahu Anhu says “One day we were with the Prophet of Allah Sallallahu Alahi Wasalam when he started laughing. Then he asked us whether we knew why he was laughing. We said that Allah and His Rasul Sallallahu Alahi Wasalam knew best. Then he said “What made me laugh was the dialogue a slave will have with his Lord on the Day of Judgment. The slave will say, “O my Lord! Did you not give me protection from injustice?” Allah (SWA) will say, “No doubt, I did”. Then this slave will say, “Since this is so, I would not be satisfied with any evidence in the matter of my accountability, except that some part of my own being stands up as witness”. Allah (SWA) will say, “Your own being is enough today to take your account”. Then his mouth will be sealed and his limbs and organs will be asked to tell about his deeds. Every organ would speak up and give true evidence. After that his mouth will be unsealed and then he will say to his own organs in displeasure, “May you be ruined; May you be destroyed; whatever I have done in the world was only to make you comfortable (whereas you have stated to give evidence against me)” (Sahih Muslim)
Saaiduna Abu Hurairah Radiallahu Anhu narrates that the Prophet of Allah Sallallahu Alahi Wasalam said “This person mouth will be sealed, and his thigh will be called to speak about all his deeds. Then his thigh, its flesh and bone will all give evidence of his deeds”. (Sahih Muslim)
(Extracted from Maariful Quran p.647 v.7)
With regards to your question if a person wrote some swears then his hands will give evidence against him on the Day of Judgement.
Only Allah Knows Best
Mohammed Tosir Miah
Darul Ifta Birmingham