Hawzah News Agency – The Prophet (SAWA), when a person complained to him about the hardness of his heart, said,

إذا أرَدتَ أن يَلينَ قَلبُكَ فَأطعِمِ المِسكينَ وامسَحْ رَأسَ اليَتيمِ.

'If you want your heart to soften, feed the needy and stroke the head of orphans.'

Source: Mishkat al-Anwar, p. 167