Muhammad bin Abdullah bin Numayr said: Buthaynah bint al-Dahhak (may Allah be pleased with her) was the sister of Thabit, and she is the one to whom Muhammad bin Maslamah (may Allah be pleased with him) sent a proposal of marriage.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20894