What was the Prophet Muhammad's (saw) response when a man from Najd with unkempt hair asked about Islam?
      Narrated Talha bin 'Ubaidullah:                          A man from Najd with unkempt hair came to Allah's Apostle and we heard     his loud voice but could not understand what he was saying, till he      came near and then we came to know that he was asking about Islam.      Allah's Apostle said, "You have to offer prayers perfectly five times      in a day and night (24 hours)." The man asked, "Is there any more      (praying)?" Allah's Apostle replied, "No, but if you want to offer the     Nawafil prayers (you can)." Allah's Apostle further said to him: "You      have to observe fasts during the month of Ramadan." The man asked,      "Is there any more fasting?" Allah's Apostle replied, "No, but if you      want to observe the Nawafil fasts (you can.)" Then Allah's Apostle      further said to him, "You have to pay the Zakat (obligatory charity)."     The man asked, "Is there any thing other than the Zakat for me to      pay?" Allah's Apostle replied, "No, unless you want to give alms of      your own." And then that man retreated saying, "By Allah! I will      neither do less nor more than this." Allah's Apostle said, "If what he     said is true, then he will be successful (i.e. he will be granted      Paradise)."