Sayyiduna Umar (may Allah be pleased with him) said: I set out intending to forbid large dowers for women, but then I recited this verse: "And you have given one of them a heap of treasure (qintar)." [Surah al-Nisa: 20]
This is a good mursal report.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصداق / 14335