Hawzah News Agency – The commander of the faithful, Imam Ali peace be upon him says:
المَطلُ والمَنُّ مُنَكِّدا الإحسانِ.
‘Delaying [one’s promise of] giving and reproaching someone for a gift embitters the goodness of the favor.’
Source: Ghurar al-Hikam, no. 1595