Abu Thabit Ya'la bin Shaddad narrates from his father: The Prophet Muhammad (peace be upon him) said, "Act contrary to the Jews and Christians; they do not pray in their leather socks and shoes."

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates this statement of the Prophet (peace and blessings be upon him): "When a person removes his shoes while performing prayer, he should place them between his feet and should not cause harm to anyone else with them."

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates this statement of the Prophet (peace and blessings be upon him): "When a person performs prayer, he should not place his shoes to his right side or to his left side, otherwise they will be on another person's right side. However, if there is no one present on his left side, then (he may place them there), or he should place (the shoes) between his two feet."

Sayyiduna Abdullah bin Sa’ib (may Allah be pleased with him) narrates: On the occasion of the conquest of Makkah, I was also present with the Prophet Muhammad (peace and blessings be upon him). He performed prayer inside the Ka’bah. He removed his shoes and placed them to his left side, then he began reciting Surah Al-Mu’minun. When he reached the mention of Sayyiduna Isa or perhaps Sayyiduna Musa, he started coughing, so he went into bowing (ruku).

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates: The Noble Prophet (peace and blessings be upon him) said: "When the muezzin begins to pronounce the iqamah, then (after that) only the obligatory prayer can be performed."

Sayyiduna Abdullah bin Sarjis (may Allah be pleased with him) narrates: A man entered the mosque after the iqamah had been pronounced while the Prophet Muhammad (peace and blessings be upon him) was performing the prayer. This man performed two rak‘ahs and then joined the row. When the Prophet (peace and blessings be upon him) had completed the prayer, he asked: Which of the two have you counted? (The narrator is in doubt, perhaps these are the words:) Through which of the two do you hope for reward now? The prayer which you performed with us, or the prayer which you performed alone?

Sayyiduna Abdullah bin Sarjis, who lived during the time of the Prophet Muhammad (peace be upon him), narrated this incident. The Prophet Muhammad (peace be upon him) was leading the Fajr prayer. During this time, a man came and performed two rak'ahs behind him, then joined the congregation for the (congregational) prayer with the attendees. When the Prophet Muhammad (peace be upon him) completed his prayer, he asked him: Which prayer have you considered as your prayer? The prayer that you performed alone, or the prayer that you performed with us?

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates: The Noble Prophet (peace and blessings be upon him) said: "When the iqamah for prayer is called, only the obligatory prayer may be performed."

Hasan narrates: Sayyiduna Abu Bakrah (may Allah be pleased with him) entered the mosque while the Prophet Muhammad (peace and blessings be upon him) was in bowing (ruku‘), so he also went into ruku‘ and then, while walking, joined the row. The Prophet Muhammad (peace and blessings be upon him) said to him: May Allah increase you in eagerness, but do not do this again.

It is narrated about Sayyiduna Abu Bakrah (may Allah be pleased with him) that he entered the mosque while the Noble Prophet (peace and blessings of Allah be upon him) was in the state of bowing (ruku‘). The narrator states: I went into ruku‘ behind the row (and then joined the row). So the Noble Prophet (peace and blessings of Allah be upon him) said: May Allah increase your eagerness, but do not do this again. (Imam Ibn Hibban, may Allah have mercy on him, says:) This narration belongs to the category about which I have mentioned in the book Usul al-Sunan that the Noble Prophet (peace and blessings of Allah be upon him) sometimes forbade a specific act in relation to a particular matter. And the person who commits this forbidden act, if he is aware of the prohibition of the Noble Prophet (peace and blessings of Allah be upon him), is considered sinful for doing it. However, the act itself is valid. Just as the Noble Prophet (peace and blessings of Allah be upon him) forbade that a person should send a marriage proposal over his brother’s proposal, or bid over his brother’s bid. So, whoever, despite knowing the prohibition of the Noble Prophet (peace and blessings of Allah be upon him) in this regard, sends a marriage proposal over his brother’s proposal, he is sinful. But the marriage (resulting from this proposal) will be considered valid. Similarly, the statement of the Noble Prophet (peace and blessings of Allah be upon him) to Sayyiduna Abu Bakrah (may Allah be pleased with him):“May Allah increase your eagerness, but do not do this again”—if someone commits this forbidden act again and is aware of its prohibition, he will be considered sinful for committing it. But his prayer will be valid. The reason is that the Noble Prophet (peace and blessings of Allah be upon him) made this much permissible for Sayyiduna Abu Bakrah (may Allah be pleased with him) so that it would be excluded from the general ruling from which the Noble Prophet (peace and blessings of Allah be upon him) had forbidden. This is mentioned in the narration transmitted by Sayyiduna Wabisah (may Allah be pleased with him). Its example is like that of muzabanah and ‘ariyyah. If it were not permissible for Sayyiduna Abu Bakrah (may Allah be pleased with him) to perform the prayer in this manner, the Noble Prophet (peace and blessings of Allah be upon him) would have ordered him to repeat the prayer. However, the command of the Noble Prophet (peace and blessings of Allah be upon him),“Do not do this again,”means that you should not hurry again when coming for prayer. It does not mean that the Noble Prophet (peace and blessings of Allah be upon him) intended to say that after saying the takbir, you should not join the row.