Sayyiduna al-Irbad bin Sariyah (may Allah be pleased with him), about whom this verse was revealed: "Nor (is there any blame) on those who, when they came to you that you might provide them with mounts, and you said, 'I find nothing on which to mount you', turned back with their eyes overflowing with tears out of grief that they could not find the means to spend (in jihad)" [Surah al-Tawbah: 92] , relates that one day the Messenger of Allah (peace and blessings be upon him) led us in the morning (Fajr) prayer and then gave us a most eloquent admonition, from which eyes shed tears and hearts quaked. Someone said: O Messenger of Allah! It seems as though this is the admonition of one bidding farewell; what do you counsel us? He (peace and blessings be upon him) said: "I counsel you to fear Allah, and to listen and obey (the ruler), even if he is an Abyssinian slave; for whoever of you lives will see intense disagreement. So adhere to my Sunnah and the way of the rightly guided caliphs (al-Khulafa' al-Rashidun); hold on to it firmly and bite onto it with your molar teeth. And beware of new matters in the religion, for every new thing is an innovation, and every innovation is misguidance."