Bulugh al-Maram, Book 1, Hadith 47 (English) ⓘ
Narrated ‘Abdullah bin Zaid (rad): Two thirds of a Mudd (of water) was brought to he Prophet (for ablution) so he began rubbing his arms. [Reported by Ahmed, and Ibn Khuzaima graded it Sahih].
وَعَنْ عَبْدِ اَللَّهِ بْنِ زَيْدٍ - رضى الله عنه - { أَنَّ اَلنَّبِيَّ - صلى الله عليه وسلم -أَتَى بِثُلُثَيْ مُدٍّ, فَجَعَلَ يَدْلُكُ ذِرَاعَيْهِ } أَخْرَجَهُ أَحْمَدُ, وَصَحَّحَهُ اِبْنُ خُزَيْمَة َ (53). 4 - صحيح. رواه أحمد (4/39)، وابن خزيمة (118) واللفظ لابن خزيمة.
also referenced under: Book 1, Hadith 48 (In-Book)