1. Purification

١۔ كتاب الطهارة

1.13 The Permissibility Of A Man Urinating In A Vessel During The Night, And Placing It Near Him

١۔١٣ باب فِي الرَّجُلِ يَبُولُ بِاللَّيْلِ فِي الإِنَاءِ ثُمَّ يَضَعُهُ عِنْدَهُ

abudawud:24Muḥammad b. ʿĪsá > Ḥajjāj > Ibn Jurayj > Ḥukaymah b. Umaymah b. Ruqayqah from her mother

The Prophet ﷺ had a wooden vessel under his bed in which he would urinate at night.  

أبو داود:٢٤حَدَّثَنَا مُحَمَّدُ بْنُ عِيسَى حَدَّثَنَا حَجَّاجٌ عَنِ ابْنِ جُرَيْجٍ عَنْ حُكَيْمَةَ بِنْتِ أُمَيْمَةَ بِنْتِ رُقَيْقَةَ عَنْ أُمِّهَا

أَنَّهَا قَالَتْ كَانَ لِلنَّبِيِّ ﷺ قَدَحٌ مِنْ عَيْدَانٍ تَحْتَ سَرِيرِهِ يَبُولُ فِيهِ بِاللَّيْلِ