Sahih Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Volume: 005 / Book Number: 059 / Hadith Number: 567
Narrated Ash Shabi:
An Nu'man bin Bashir said, "Abdullah bin Rawaha fell down unconscious.." (and mentioned the above Hadith adding, "Thereupon, when he died she (i.e. his sister) did not weep over him."