Hawzah News Agency – Imam Ali (AS), in his will to his son Imam al-Hasan (AS) said,

اُوصِيكَ بتَقوَى اللَّهِ - أي بُنَيَّ - ولُزومِ أمرِهِ، وعِمارَةِ قَلبِكَ بذِكرِهِ.

'I advise you to be Godwary, O my son, and to abide by His orders, and to keep your heart alive with His remembrance.'

Source: Nahj al-Balagha, Letter 31