Nahj al-Balāgha
Hadith 1759١٥٣. وَقَالَ (عليه السلام): لَا يَعْدَمُ الصَّبُورُ الظَّفَرَ وَإِنْ طَالَ بِهِ الزَّمَانُ.
153. Amīr al-mu’minīn, peace be upon him, said: The endurer does not miss success although it may take a long time.