He would perspire, and my mother would gather his sweat with a piece of cotton, put it in a flask, and blend it with her musk. This isnād contains only three transmitters, meets the conditions laid down by the two Imams, yet neither of them—or anyone else—recorded it.

Al-Bayhaqī said:
Muḥammad ibn ʿAbd Allāh al-Ḥāfiẓ informed us; Abū ʿAmr al-Maghribī narrated to us; al-Ḥasan ibn Sufyān informed us; and Abū Bakr ibn Abī Shaybah narrated to us.

Muslim said:
Abū Bakr ibn Shaybah narrated to us; ʿAffān narrated to us; Wahīb narrated to us; Ayyūb narrated to us, from Abū Qilābah, from Anas, from Umm Sulaym: that the Messenger of Allah ﷺ used to visit her and take his midday nap in her house. She would spread a leather cloth for him, upon which he would rest. Because he perspired profusely, she would collect his sweat and place it in her perfume and her flasks. The Messenger of Allah ﷺ said,
‘O Umm Sulaym, what is this?’
She replied, ‘Your sweat—I mix my perfume with it.’ This is Muslim’s wording (1).

Abū Yaʿlā al-Mawṣilī relates in his Musnad:
Bishr narrated to us; Ḥalbas ibn Ghālib narrated to us; Sufyān al-Thawrī narrated to us, from Abū al-Zinād, from al-Aʿraj, from Abū Hurayrah who said:
A man came to the Messenger of Allah and said, ‘O Messenger of Allah, I have married off my daughter and I would like you to help me with something.’ He replied,
‘I have nothing to give you, but tomorrow come to me with a wide-mouthed flask and a piece of wood; the sign between you and me will be that you knock on the side of the door.’
The man came with the wide-mouthed flask and the piece of wood. The Prophet began to wipe sweat from his forearms until the flask was full, then said,
‘Take it, and tell your daughter to dip this stick into the flask and perfume herself with it.’
Thereafter, whenever she perfumed herself with it, the people of Madinah would notice the fragrance, and their houses became known as “the dwellings of the perfumed ones.” This ḥadīth is exceedingly rare (3).

Al-Ḥāfiẓ Abū Bakr al-Bazzār said:
Muḥammad ibn Hishām narrated to us; Mūsā ibn ʿAbd Allāh narrated to us; ʿUmar ibn Saʿīd narrated to us, from Saʿīd, from Qatādah, from Anas who said: Whenever the Messenger of Allah ﷺ passed through one of the streets of Madinah, the people would perceive the fragrance of perfume and say, ‘The Messenger of Allah passed along this road.’

(Abū Zurʿah al-Rāzī likewise recorded it in Dalāʾil al-Nubuwwah, through ʿUmar ibn Saʿīd al-Ashajj, from Saʿīd, from Qatādah, from Anas, who said: Whenever the Messenger of Allah ﷺ passed along a street of Madinah, the scent of musk would linger there, so the people would say, ‘The Messenger of Allah ﷺ has passed this way today.’) (4)