4 – Sleep: “He would instruct us, when we were on a journey, not to remove our leather socks for three days and their nights except in the case of major ritual impurity, but we might keep them on after defecation, urination, and sleep.” (Tirmidhī: sound; Nasāʾī; Aḥmad) This is the opinion of al-Ḥasan al-Baṣrī, al-Muzanī, Abū ʿUbayd al-Qāsim ibn Sallām, Ibn Rāhūyah, and Ibn al-Mundhir, and it was likewise adopted by Ibn Ḥazm (1/222–231).

5 – Eating camel meat: the same ruling was held by Aḥmad, Isḥāq, Ibn al-Mundhir, and Ibn Khuzaymah, and was preferred by al-Bayhaqī and Ibn Ḥazm (1/241). Al-Shāfiʿī said, “If the ḥadith is authentic, I act upon it.” Al-Nawawī wrote in his commentary on Muslim: “This view is better supported by evidence, even though the majority differs.” Shaykh al-Islām championed it in al-Fatāwā (1/57–59), inclined toward it in Majmūʿat al-Rasāʾil (2/432), and it is also the position of al-Shawkānī (1/175–177).

6 – Touching one’s private part with sexual desire.

11 – A person in a state of purity who is uncertain about having broken it: “If any of you feels something in his belly and is unsure whether anything has emerged or not, he should not leave the mosque until he hears a sound or perceives an odor.” (Muslim; Tirmidhī)

12 – Situations in which ablution is recommended:
• performing ablution before every prayer;
• performing ablution after contact with something touched by fire (Shaykh al-Islām, Majmūʿat al-Rasāʾil, 2/231–232);
• performing ablution for the remembrance of Allah—and all the more so for reciting the Quran—as related from al-Muhallab.