The Prophet (peace and blessings be upon him) said:
"The most excellent deed is offering the prayer at its (appointed) time and jihad in the path of Allah."
Hadith Referenceصحیح الجامع الصغیر / حرف الألف / 1123
Hadith Gradingالألبانی:صحيح
Hadith Takhrij[هب] عن ابن مسعود. الصحيحة ١٤٨٩: ق١.