343 - باب تحريم المرور بين يدي المصلي
Prohibition of passing in front of a Worshipper while he is offering Salat (Prayer)
1758 - عن أبي الجهيم عبد الله بن الحارث بن الصمة الأنصاري رضي الله عنه قال قال رسول الله صلى الله عليه و سلم : [ لو يعلم المار بين يدي المصلي ماذا عليه لكان أن يقف أربعين خيرا له من أن يمر بين يديه ] قال الراوي : لا أدري قال أربعين يوما أو أربعين شهرا أو أربعين سنة . متفق عليه
1758. Abul-Juhaim `Abdullah bin Al-Harith (May Allah be pleased with him) said: The Messenger of Allah (PBUH) said, "If the person who passes in front of a praying person, realizes the enormity of the sinfulness of this act, it will have been better for him to wait forty than to pass in front of him.''
[Al-Bukhari and Muslim].
[The narrator was not sure whether the Prophet (PBUH) said forty days, months or years.]
Commentary: We learn from this Hadith that it is a great sin to pass before a person who is offering Salat. People should also take care that they do not offer Salat without placing a Sutrah in front of them. A Sutrah refers to anything that a person sets up in front of him; this could be a stick, another person praying in front of him or even a line which he can draw on the ground. The distance between the person offering his Salat and the Sutrah should not be more than approximately one meter and a half. If the distance is longer than this, then it is not unlawful to pass before someone offering Salat.
344 - باب كراهة شروع المأموم في نافلة بعد شروع المؤذن في إقامة الصلاة سواء كانت النافلة سنة تلك الصلاة أو غيرها
Undesirability of offering optional Prayer after the announcement of Iqamah