Mishkat al-Masabih
Mishkat al-Masabih 382
وَعَنْ أَبِي أَيُّوبَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: " أَرْبَعٌ مِنْ سُنَنِ الْمُرْسَلِينَ: الْحَيَاءُ وَيُرْوَى الْخِتَانُ وَالتَّعَطُّرُ وَالسِّوَاكُ وَالنِّكَاحُ ". رَوَاهُ التِّرْمِذِيّ
Unreviewed translation. All hadiths in this collection are available in five languages. Titles and introductions may remain in Arabic.
Abū Ayyūb reported that the Messenger of God said: ‘Four practices belong to the ways of the messengers: modesty—or, according to another report, circumcision—using perfume, using the tooth-stick, and marriage.’ Al-Tirmidhī transmitted it.
Notes and open questions — unreviewed
The accompanying grading labels this report ḥasan (good). The Arabic gives modesty as the wording and mentions circumcision as an alternative report, preserving four practices in either version.