2 – Abū Saʿīd al-Khudrī (may Allah be pleased with him) reported that the Messenger of Allah ﷺ said, “Water is purifying; nothing renders it impure.” Narrated by the Three Compilers and declared authentic by Aḥmad. ⦗1⦘

Grade of the ḥadīth
The report is ṣaḥīḥ and is known as “the ḥadīth of Biʾr Budāʿah (the Well of Budāʿah).” Aḥmad said, “The ḥadīth of Biʾr Budāʿah is authentic,” while al-Tirmidhī graded it ḥasan. Abū Usāmah transmitted this narration with notable precision, and it has been related from Abū Saʿīd and others through several independent chains.

Al-Talkhīṣ (1/20) records that the ḥadīth was authenticated by Aḥmad, Yaḥyā ibn Maʿīn, and Ibn Ḥazm. Al-Albānī commented, “Its transmitters are the narrators of the two Ṣaḥīḥs except ʿUbaydullāh ibn ʿAbd al-Raḥmān ibn Rāfiʿ, about whom al-Bukhārī said, ‘His status is unknown.’ Yet the earlier scholars’ authentication stands; the report is well known and accepted by the leading imams.” Shaykh Ṣiddīq Ḥasan wrote in al-Rawḍah that the proof is established by the imams who declared it sound.

Besides those already mentioned, it was also graded authentic by Ibn Ḥibbān, al-Ḥākim, Ibn Khuzaymah, Ibn Taymiyyah, and others. Ibn al-Qaṭṭān criticized it because the narrator transmitting from Abū Saʿīd is unknown, but his lone objection cannot outweigh the combined authentication of those eminent scholars.

Vocabulary of the ḥadīth
• ṭahūr: with an open tāʾ; an intensive form meaning “pure in itself and purifying for others.”
• yunjissuhu: derived from najasa/yanjusu (pattern of qatala); najus is the opposite of ṭahura. The noun najāsah (impurity) in Islamic law denotes a specific filth that prevents prayer, such as urine or blood.