Sayyidah Aishah (may Allah be pleased with her) says: Whenever the Messenger of Allah (peace and blessings be upon him) gave someone in marriage or married a woman himself, he (peace and blessings be upon him) scattered dates.
Asim bin Sulayman is a Basran; Amr bin Ali accused him of lying and attributed the fabrication of hadith to him.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصداق / 14683