Hawzah News Agency – The merciful prophet of Islam, peace be upon him and his household says:

أوْثَقُ عُرَى الإيمانِ: الوَلايةُ في اللَّهِ، والحُبُّ في اللَّهِ، والبُغْضُ في اللَّهِ.

'The strongest bonds of faith are: accepting Allah's guardianship, to love for the sake of Allah and to hate for the sake of Allah.'

Source: Kanz al-Ummal, no. 43525