The owner of this house, that is, Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him), said: I asked the Messenger of Allah (peace and blessings be upon him): Which deed is most beloved to Allah? He said: "Performing the prayer at its time." I said: Then which? He said: "Kindness to parents." I said: Then which? He said: "Then jihad in the path of Allah." And had I asked him for more, he (peace and blessings be upon him) would have told me more.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 9769