On rushing or running when prayer is called
Question

                What should a person do if prayer starts and a person is still on his way 
to the masjid?
Praise be to Allah.If prayer starts and a person is still on his way to the masjid, 
  then he should not hurry in his walk; instead, he should walk with calmness 
  and respect as indicated in the hadith of Abi Huraira (may Allah be 
  pleased with him), in which he said: [The Prophet]  
  (peace be upon him) said: "If salaat is started, do not approach 
  it running, but approach it walking, with calmness. Whatever you catch up with, 
  pray, and what you miss, complete it."1
From the book What Should You Do in 
  the Following Situations... ?
1 Narrated by Al-Bukhari 
  Fath 2/390.