Al-Kāfi - The Book on Oneness of Allah (God)

Al-Kāfi - The Book on Oneness of Allah (God) Chapter: Chapter On Attribute Of Essence (Sifat al-DhDhat) Of Allah َّدُ بْنُ يَحْيَى عَنْ ٠َّدِ بْنِ الْحُسَيْنِ عَنْ صَفْوَانَ بْنِ يَحْيَى عَنِ الْكَاهِلِيِّ قَالَ كَتَبْتُ إِلَى أَبِي الْحَسَنِ (عَلَيْهِ السَّلا٠) فِي دُعَاءٍ الْحَ٠ِهِ فَكَتَبَ إِلَيَّ لا تَقُولَنَّ ٠ِهِ فَلَيْسَ لِعِلْ٠ُنْتَهًى وَلَكِنْ قُلْ ٠ُنْتَهَى رِضَاهُ‏.

Rather, say, 'the extent of His pleasure.'" صحيح - Shaykh Baqir al-Behbudi (Sahih al-Kafi (1/15)) حسن - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (2/10))