عَنْ عُمَرَ رَضِيَ اللهُ عَنْهُ أَيْضًا قَالَ: بَيْنَمَا نَحْنُ جُلُوسٌ عِنْدَ رَسُولِ اللَّهِ صلى الله عليه و سلم ذَاتَ يَوْمٍ، إذْ طَلَعَ عَلَيْنَا رَجُلٌ شَدِيدُ بَيَاضِ الثِّيَابِ، شَدِيدُ سَوَادِ الشَّعْرِ، لَا يُرَى عَلَيْهِ أَثَرُ السَّفَرِ، وَلَا يَعْرِفُهُ مِنَّا أَحَدٌ. حَتَّى جَلَسَ إلَى النَّبِيِّ صلى الله عليه و سلم . فَأَسْنَدَ رُكْبَتَيْهِ إلَى رُكْبَتَيْهِ، وَوَضَعَ كَفَّيْهِ عَلَى فَخِذَيْهِ، وَقَالَ…
Also on the authority of `Umar (ra) who said: While we were one day sitting with the Messenger of Allah (ﷺ) there appeared before us a man dressed in extremely white clothes and with very black hair. No traces of journeying were visible on him, and none of us knew him. He sat down close by the Prophet (ﷺ) rested his knees against the knees of the Prophet (ﷺ) and placed his palms over his thighs, and said: "O Muhammad! Inform me about Islam." The Messenger of Allah (ﷺ) replied: "Islam is that you should testify that there is no deity worthy of worship except Allah and that Muhammad is His Messenger (ﷺ), that you should perform salah (ritual prayer), pay the zakah, fast during Ramadan, and per…