Sayyiduna Umar (may Allah be pleased with him) once delivered a speech at "Jabiyah" during a journey and said: Once the Prophet (peace and blessings be upon him) stood to deliver a sermon just as I am standing now, and he said: I advise you to treat my companions well, and this command is also for those who come after them, and for those who come after them. After this, lying will become so widespread that a man will be ready to give testimony even before being asked for it. So whoever among you desires a place in Paradise should adhere to the "Jama'ah" (the main body), for the devil is with the lone person and is farther from two. Remember! None of you should sit in seclusion with a woman, for the third among them is the devil. And whoever feels happiness due to his good deed and sorrow due to his bad deed, he is a believer.