Bukhari

Hadith Commentary:
➊
Both urine and feces are included in the act of relieving oneself; thus, the washing of urine is established from this. The urine of lawful animals is an exception to this, the explanation of which will come later. Similarly, the word "yaghsil" (he would wash) is also general, indicating that he would wash the place of impurity, whether it was the place of urine or the place of feces. The method of purification is washing, and thus the chapter heading is established accordingly.

➋
The commentator of Bukhari, Ibn Battal, has written that Imam Bukhari rahimahullah has agreed with the Zahiri school regarding the urine of animals. (Sharh Ibn Battal: 1/347) This is an error on the part of Ibn Battal, as he has portrayed Imam Bukhari rahimahullah as an adherent of the Zahiri school, because according to the Zahiris, the urine of all animals except humans is pure, whether their meat is eaten or not. Imam Bukhari rahimahullah neither adopted this position nor declared it to be the preferred view at any point. Merely agreeing with some particulars of the Zahiri school does not necessitate adopting all their particulars. Imam Bukhari rahimahullah himself is an independent mujtahid; he adopts those particulars of any mujtahid that are in accordance with the Book and Sunnah, and silently leaves those that are contrary to the Book and Sunnah. The chapter headings of Imam Bukhari rahimahullah themselves are his solid and silent discussions. Following authentic ahadith according to his specific conditions is his sole concern. Among the Zahiris is also Ibn Hazm, who considers the urine and dung, etc., of edible animals to be impure. A study of Ibn Hazm’s "al-Muhalla" shows that, according to him, it is necessary to avoid the urine of every animal; otherwise, if one is negligent, there is a warning of punishment for him. In summary, Imam Bukhari rahimahullah is an independent mujtahid and is subject to evidence. His school is the Book and Sunnah, and nothing else.

➌
There is an Arabic saying that even a liar sometimes speaks the truth. In view of this, we quote here a wise fatwa of Islahī Sahib in this regard: “I lived in the villages for eight years and observed that the wisest fatwa is that of those who said that the urine of those animals whose meat we eat is also pure. I have seen with my own eyes that if you live among these animals, it is impossible that your clothes, etc., do not get splashed with their urine at some point. Therefore, by analogizing their urine to human urine, extraordinary hardship is created for people, and doing so is against the temperament of the Shariah.” (Tadabbur-e-Hadith: 1/311)

Hadith Commentary:
Vocabulary of the Hadith:
(1)
يَتَبَرَّزُ:
An open place for relieving oneself,
where a person can be hidden from the sight of people,
that is, for answering the call of nature, the Prophet (sallallahu alayhi wa sallam) would go far from the inhabited area,
so that no one would see him in that state.

(2)
يَتَغَسَّلُ بِهِ:
He would wash the place of istinja (cleaning oneself after relieving oneself) with water,
the purpose being to perform istinja.

Benefits and Issues:
At the time of answering the call of nature, the Messenger of Allah (sallallahu alayhi wa sallam) used to keep a stick with him,
so that it could be fixed in front and a cloth, etc. could be placed over it to make a screen,
or seeing it, someone would not intend to pass by that way,
or it could be used to soften hard ground,
so that splashes would not occur,
or if any harmful insect or creature appeared in front, it could be used for protection,
or, when needed, it could be used as a sutrah (barrier for prayer).
(Fath al-Bari: 1/331)