ʿUyūn akhbār al-Riḍā
Hadith 8484 - وَبِهذَا الإِسنادِ قالَ: قالَ رَسُولُ اللَّهِ صَلَّى اللهُعَلَيْهِ وَآلِهِ: أَفْضَلُ اَعمالِ اُمَّتي انتِظارُ فَرَجِ اللَّهِ.
31-84 According to the same documentation, God’s Prophet (S) said, “The best deed for my nation is awaiting some relief (of their affairs) by God.”