Hadith.628 - Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said:
"The closest a servant is to Allah سبحانه وتعالى, the Mighty and Majestic, is when he is in prostration (Sujood)”.
And Allah سبحانه وتعالى Almighty said:
"Prostrate and draw near [to Me]." (Surah Al-‘Alaq 96:19)