Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates that the Messenger of Allah (peace be upon him) used to pray on a small mat, and he (peace be upon him) would keep it with him during travel and at home. Similarly, Janab Mahzami has narrated this hadith to us in a marfu’ form; although he has remembered the chain of this hadith and narrated it as marfu’, this hadith is ghareeb. Likewise, the narration of Janab Zuhri from Sayyiduna Anas (may Allah be pleased with him) is also ghareeb.

(Because) in this way, his shoes will be on the right side of the person praying who is standing to his left.

It is narrated from Sayyiduna Abdullah bin Sa’ib رضي الله عنه that on the day of the conquest of Makkah, the Prophet Muhammad صلى الله عليه وسلم placed his shoes on his left side and performed the prayer.

Sayyiduna Abdullah bin Sa’ib (may Allah be pleased with him) narrates that in the year of the conquest of Makkah, I presented myself before the Messenger of Allah (peace and blessings be upon him). On the day of the conquest of Makkah, the Messenger of Allah (peace and blessings be upon him) performed the prayer, and he took off his shoes and placed them on his left side.

Because in this way, the shoes of the person praying on his left side will be on the right side of the one praying.

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When any one of you prays, he should not place his shoes on his right side or on his left side, unless there is no worshipper on his left side (then he may place them there), and he should place them between his legs." In the narration of Janab al-Dawraqi, these words are mentioned: "And he should not place his shoes on his left side unless there is no one on that side," and he did not mention the right side.

And the evidence that if the one praying performs prayer in shoes and a garment that are pure according to his knowledge, then it becomes clear to him that the shoes or the garment were not pure, what has passed of his prayer is valid for him and he is not required to repeat it, is that a person is only commanded to pray in a garment that is pure according to his knowledge, not according to what is hidden with Allah.

It is narrated from Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) was leading the prayer when he removed his shoes, so the Companions also removed their shoes. Then, when the Prophet (peace and blessings be upon him) finished the prayer with salam, he said: "Why did you remove your shoes?" They replied, "O Messenger of Allah (peace and blessings be upon him), we saw that you removed your shoes, so we also removed ours." The Prophet (peace and blessings be upon him) said: "Indeed, Jibreel (peace be upon him) came to me and informed me that there was impurity on my shoes (so I removed them). Therefore, when any one of you comes to the mosque, he should turn his shoes over and look at them; if there is any impurity on them, he should wipe them against the ground to clean them, and then he may pray in them." This is the narration of Yazid bin Harun, while in the narration of Abu al-Walid it is stated: "Indeed, Jibreel (peace be upon him) informed me that there was impurity or filth on them."

If it is imagined to him that he has broken his wudu in it, and the evidence is that certainty of purity is not removed except by certainty of impurity, and that the prayer is not invalidated by doubt regarding impurity until the one praying is certain of impurity.

Sayyiduna Abdullah bin Zaid (may Allah be pleased with him) narrates that I asked the Messenger of Allah (peace and blessings be upon him) about a person who feels something during prayer. The Messenger of Allah (peace and blessings be upon him) said: "He should not break his prayer until he hears a sound or perceives a smell."