Hawzah News Agency – Imam Sadiq peace be upon him says:

الذُّنوبُ التي تُعَجِّلُ الفَناءَ قَطيعَةُ الرَّحِمِ.

'The sin that hastens one's death is cutting off ties with one's kin.'

Source: Bihar al-Anwar, v. 74, p. 94, no. 23