The Hereafter and Unseen
In Which Language Will the Deceased Be Questioned in the Grave?
Shaykh Ṣāliḥ al-Fawzān explains that while questioning in the grave is certain, the language used is unknown, as it was not specified by the Prophet ﷺ.
Questioner:
In which language will the dead be questioned in the grave?
Shaykh Ṣāliḥ ibn Fawzān al-Fawzān
Allah knows best. We believe he will be questioned and Allāh knows best [in which] language. The Prophet did not explain that to us.