Al-Kāfi
Hadith 9783ـ عَلِيُّ بْنُ مُحَمَّدٍ عَنْ سَهْلِ بْنِ زِيَادٍ عَنِ الْوَشَّاءِ قَالَ سَمِعْتُ الرِّضَا يَقُولُ أَقْرَبُ مَا يَكُونُ الْعَبْدُ مِنَ الله عَزَّ وَجَلَّ وَهُوَ سَاجِدٌ وَذَلِكَ قَوْلُهُ عَزَّ وَجَلَّ وَاسْجُدْ وَاقْتَرِبْ.
3. Ali ibn Muhammad has narrated from Sahl ibn Ziyad from al-Washsha’ who has said the following: “I heard al-Rida’ (a.s.), say, ’The condition wherein a servant of Allah, the Most Majestic, the Most Glorious, is nearest and closest to Him is in Sajdah. It is because of the words of Allah, the Most Majestic, the Most Glorious, “Prostrate (do Sajdah) and become close.’””