Al-Matalib al-'Aliyah 4533 — The trial of the grave and the punishment

It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that he said (explaining the Speech of Allah Almighty): "Indeed, that extremely narrow and difficult life which Allah, the Blessed and Exalted, mentioned in His Book by saying, 'then indeed, for him is a narrow life' [Surah Ta Ha: 124], means the punishment of the grave."
There is weakness in the chain of this report due to Abd al-Rahman bin Ishaq (al-Madani); however, reports (athar) in support of this meaning are also narrated from other Companions, and many exegetes have regarded the punishment of the grave as the referent of this verse, which strengthens its meaning.