Sunan an-Nasa'i, Book 26, Hadith 177 (In-Book) ⓘ
It was narrated that Anas said: "The Messenger of Allah saw traces of yellow perfume on 'Abdur-Rahman and said: 'What is this?' He said: 'I married a woman for a Nawah (five Dirhams) of gold.' He said: 'May Allah bless you. Give a Walimah (wedding feast) even if it is with one sheep.'"
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ ثَابِتٍ، عَنْ أَنَسٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم رَأَى عَلَى عَبْدِ الرَّحْمَنِ أَثَرَ صُفْرَةٍ فَقَالَ " مَا هَذَا " . قَالَ تَزَوَّجْتُ امْرَأَةً عَلَى وَزْنِ نَوَاةٍ مِنْ ذَهَبٍ . فَقَالَ " بَارَكَ اللَّهُ لَكَ أَوْلِمْ وَلَوْ بِشَاةٍ " .
also referenced under: Hadith 3372 (Reference) & Volume 4, Book 26, Hadith 3374 (DarusSalam)