It is narrated from Sayyiduna ‘Irbaad bin Saariyah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) would come to us at Suffah while we were wearing turbans, and he (peace and blessings be upon him) would say: If you knew what Allah has stored for you, then you would not grieve over those things which were not given to you in this world. Remember that Persia and Rome will certainly, most certainly, be conquered at your hands.