Abdullah ibn Mas’ud reported: I asked, “O Messenger of Allah, which deed is best?” The Messenger of Allah, peace and blessings be upon him, said, “Prayer in its proper time.” I asked, “What is next?” The Prophet said, “Good treatment of your parents.” I said, “What is next?” The Prophet said, “Jihad in the way of Allah.” I became silent and if I had asked him more, he would have told me.
Source: Ṣaḥīḥ al-Bukhārī 2630, Ṣaḥīḥ Muslim 85
Grade: Muttafaqun Alayhi (authenticity agreed upon) according to Al-Bukhari and Muslim
عن عبد الله بن مسعود رضي الله عنه قُلْتُ يَا رَسُولَ اللَّهِ أَيُّ الْعَمَلِ أَفْضَلُ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ الصَّلَاةُ عَلَى مِيقَاتِهَا قُلْتُ ثُمَّ أَيٌّ قَالَ ثُمَّ بِرُّ الْوَالِدَيْنِ قُلْتُ ثُمَّ أَيٌّ قَالَ الْجِهَادُ فِي سَبِيلِ اللَّهِ فَسَكَتُّ عَنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَلَوْ اسْتَزَدْتُهُ لَزَادَنِي
2630 صحيح البخاري كتاب الجهاد والسير باب فضل الجهاد والسير
85 صحيح مسلم كتاب الإيمان باب بيان كون الإيمان بالله تعالى أفضل الأعمال