It is narrated from Hazrat Abu Umamah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Allah and His angels send mercy upon those who pray in the first row. The noble companions (may Allah be pleased with them) requested twice to include the second row in this virtue, but the Noble Prophet (peace and blessings be upon him) kept saying the same. Then, upon the third request, he said: And upon the second row as well. And the Noble Prophet (peace and blessings be upon him) said: Keep your rows straight, join your shoulders together, be gentle in the hands of your brothers, and fill the gaps in between, for indeed Satan enters your rows like small goats.