طُوبَی لِمَنْ أخْلَصَ لِلَّهِ عَمَلَهُ، وَعِلْمَهُ، وَحُبَّهُ، وَبُغْضَهُ، وَأخْذَهُ، وَتَرْکَهُ، وَکَلامَهُ، وَصَمْتَهُ، وَفِعْلَهُ، وَقَوْلَهُ. How happy is he who sincerely devotes exclusively to Allah his entire life, including his actions, knowledge, love, hatred, receiving, relinquishing, speech, silence, and his words and deeds.
Bihar al-Anwar, Vol 77, page 289
Amir al-Mu'minin Imam Ali (peace be upon him)Hadith