The Prophet (peace and blessings be upon him) said:
"The best of deeds are performing the prayer at its (appointed) time and treating one's parents with kindness."
Hadith Referenceصحیح الجامع الصغیر / حرف الألف / 1094
Hadith Gradingالألبانی:صحيح
Hadith Takhrij[م] عن ابن مسعود. الروض ١١٠، الصحيحة ١٤٨٩.