Sunan At-Tirmidhi

Abu Amr Ash-Shaibani narrated:""A man said to Ibn Mas'ud: 'Which deed is most virtuous?' He said: 'I asked Allah's Messenger (that). He said: ""Salat at the beginning of its time."" I asked him: ""What is after that O Messenger of Allah?"" He said: ""Being dutiful to one's parents."" I said: ""What is after that [O Messenger of Allah]?"" He said: ""Jihad in the Way of Allah