Busr bin Sa'id said: Abu Juhaym Ansari sent me to ask Sayyiduna Zayd bin Khalid Juhani (may Allah be pleased with him) what he had heard from the Prophet (peace and blessings of Allah be upon him) regarding a person passing in front of someone who is praying. He said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "For one of you to stand for forty is better for him than to pass in front of someone who is praying." Sufyan bin 'Uyaynah said: I do not remember whether he said forty years, or forty months, or days.