Hawzah News Agency – Imam Zayn al-Abidin (AS) said in one of his supplications,

فإنّما أسألُکَ لِقَدیمِ الرَّجاءِ فیکَ، وعَظیمِ الطَّمَعِ منکَ؛ الذی أوجَبتَهُ علی‏ نفسِکَ مِن الرَّأفَةِ والرَّحمَةِ.

‘For indeed I ask You because of my eternal hope in You and because of the great desire that I entertain about You; which is the graciousness and mercy that You have made obligatory upon Yourself.’

Source: Iqbal al-Amal, v. 1, p. 168