The act Allah loves most is performing Ṣalāh at its time, then dutifulness to parents, then jihād

I asked the Prophet ﷺ "Which deed is the dearest to Allah?" He replied, "To offer the prayers at their early stated fixed times." I asked, "What is the next (in goodness)?" He replied, "To be good and dutiful to your parents" I again asked, "What is the next (in goodness)?" He replied, 'To participate in Jihad (religious fighting) in Allah's cause." ʿAbdullah added, "I asked only that much and if I had asked more, the Prophet ﷺ would have told me more."  

سَأَلْتُ النَّبِيَّ ﷺ أَىُّ الْعَمَلِ أَحَبُّ إِلَى اللَّهِ؟ قَالَ: «الصَّلاَةُ عَلَى وَقْتِهَا۔» قَالَ: ثُمَّ أَىُّ؟ قَالَ: «ثُمَّ بِرُّ الْوَالِدَيْنِ۔» قَالَ: ثُمَّ أَىُّ؟ قَالَ: «الْجِهَادُ فِي سَبِيلِ اللَّهِ۔» قَالَ: حَدَّثَنِي بِهِنَّ وَلَوِ اسْتَزَدْتُهُ لَزَادَنِي