(36) باب بَيَانِ كَوْنِ الإِيمَانِ بِاللَّهِ تَعَالَى أَفْضَلَ الأَعْمَالِ
'Abdullah b. Mas'ud reported:
I said: Messenger of Allah, which of the deeds (takes one) nearer to Paradise? He (the Holy Prophet) replied: Prayer at its proper time, I said: What next, Messenger of Allah? He replied: Kindness to the parents. I said: What next? He replied: Jihad in the cause of Allah.
Reference: Sahih Muslim 85 b
In-book reference: Book 1, Hadith 159
USC-MSA web (English) reference(deprecated numbering scheme): Book 1, Hadith 152