Al-Kāfi - The Book of Prayer

Chapter: Sajdah, Readings and Recitations therein in Obligatory Salah (prayer) and Optional Salah (prayer) and Readings between the Two Sajdah َّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنْ فَضَالَةَ عَنْ أَبَانٍ عَنْ عَبْدِ الرَّحْ٠َنِ بْنِ سَيَابَةَ قَالَ قُلْتُ لأَبِي عَبْدِ الله (عَلَيْهِ الْسَّلا٠) أَدْعُو وَأَنَا سَاجِدٌ فَقَالَ نَعَ٠ْ فَادْعُ لِلدُّنْيَا وَالآخِرَةِ فَإِنَّهُ رَبُّ الدُّنْيَا وَالآخِرَةِ.

Plead for the worldly and the hereafter; He is the Lord of the world and the Lord of the life to come.’” (Hadith 6 is best explained by fatwa.) جهول - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (5/130))