Hawzah News Agency – Imam al-Kazim (AS) said at a graveside,

إنّ شيئاً هذا آخِرُهُ لَحَقيقٌ أن يُزهَدَ في أوَّلِهِ، وإنّ شيئاً هذا أوَّلُهُ لَحَقيقٌ أن يُخافَ آخِرُهُ.

'Verily the thing [i.e. life] whose end is this [grave] deserves to be spent in asceticism, and verily the thing [i.e. the Hereafter] which begins with this [grave] deserves to be feared.'

Source: Maani al-Akhbar, p. 343, no. 1